HL6319G - Hitachi Semiconductor

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Glossary and Application Notes ORDERING
INFORMATION Request for Quote
via  E-mail
New Mitsubishi Laser Diodes
 Mitsubishi 35mW 658nm Laser Diode -- ML1016R -- Ø5.6mm package
 Mitsubishi 35mW 685nm Laser Diode -- ML1012R -- Ø5.6mm package
 Mitsubishi 50mW 785nm Laser Diode -- ML64114R -- Ø9mm package
New Sanyo Laser Diodes
 Sanyo 20mW 635nm Laser Diode -- DL4038-025 -- Ø9mm package
Laser Diodes,  Optics,  and  Related Components - Optima

 Sanyo 70mW 785nm Laser Diode -- DL7040-201 -- Ø5.6mm package
 Sanyo 100mW 830nm Laser Diode -- DL 7032-001 -- Ø9mm package
 Sanyo 150mW 830nm Laser Diode -- DL 8032-001 -- Ø9mm package
Ophir PD 200 Optical Power Meter
 New Low Price Includes Photodiode Sensor with Two Calibrated
Wavelengths
Diode Laser Modules
 Diode Laser Modules for OEM Applications -- Low Cost 635nm and
650nm
Laser Diode Optics and Components
NEW LENS — 4mm FL, 0.50 NA Molded Glass Asphere for
Laser Diodes
Laser Diode Collimating and Objective Lenses
Multi-element Spherical Glass Lenses
Single element Molded Glass Aspheric Lenses
Injection Molded Plastic Aspheric Lenses
Achromats, Doublets, Singlets, Mirrors, Beamsplitters etc...
Laser Diode Mounting Kits
Laser Diodes,  Optics,  and  Related Components - Optima

Convenient laser diode mounting systems for 5.6 mm or 9 mm diodes, a variety of lens

options for collimating or focusing the laser diode and several mechanical configurations

available...

New mounting kits not shown in the Optima printed catalog are described here:

LDM 1100 KIT -- laser diode mount attaches to a standard optical bench post...

ADP 9056 KIT -- optics package for use with LDM 1100 KIT, includes 3 lenses...

LDM 3400 KIT -- with 6 different interchangeable apertures for beam shaping...

LDM 4100 KIT -- molded glass aspheric lens with 3 axis lens adjustment...

LDM 4200 KIT -- an extra long focal length lens with a 0.14 NA...

LDM 4500 KIT -- a short focal length lens provides a smaller collimated beam...

Collimated Diode Lasers

A laser diode and collimating lens pre-assembled into a compact cylindrical housing, the

laser diode is collimated or focused to a specified distance

Anamorphic Prisms

Used for laser diode beam shaping (i.e. to circularize a laser diodes elliptical beam)

Visible and Near-Infrared Diode Laser Modules

With optical power starting at 1mW and available up to 50mW, operating in the visible

range from 635nm to 685nm and near-infrared wavelength of 780nm.

Diode Laser Modules for OEM Applications -- Low Cost 635nm and 650nm

Line Generating Modules and Aspheric Line Generating Lenses

Laser Diodes, Optics, and Related Components - Optima

2-Axis and 4-Axis Precision Positioners

A unique mechanical component used to accurately position optics and optoelectronic

components. Very compact and economical, ideally suited for use with lasers diodes, modules

and fibers...

Technical Information / Application Notes

Company Profile:

Optima Precision manufactures high-quality optics, specialized mechanical components, and

instruments for use with laser diodes. Optima also supplies laser diodes from many of the leading

manufacturers i.e. Mitsubishi – Sanyo – Sony Toshiba

Offering both aspheric and multi-element lenses, Optima lenses are specifically designed for

collimating or focusing laser diodes. Lenses are available in either glass or plastic materials with a

wide selection of focal lengths, numerical apertures, and mounting configurations. Cost effective for

both OEM applications and/or R&D.

Several different laser diode mounting kits are offered – these mounting systems provide an

essential heatsink for the standard Ø5.6mm and Ø9mm laser diode and use Optima's proprietary

laser diode optics. The LDM 3400 KIT has interchangeable apertures for beam shaping.

Precision Positioners – A unique mechanical component used to accurately position optics and

optoelectronic components. Very compact and economical, ideally suited for use with lasers diodes,

modules and fibers...

Optima Precision Inc. / Contact, Terms and Ordering Information:

1. MINIMUM ORDER REQUIREMENTS: U.S. orders $50.00; International orders $100.00

2. TERMS OF PAYMENT: Credit card, C.O.D, or prepayment for all new customers and first time orders. Net 30

Days for established customers in good standing (subject to credit approval and periodic review). Past due balances are

subject to a late charge of 1.5% per month. Date of invoice establishes the start of the 30-day payment period.

3. CREDIT CARDS ACCEPTED: MasterCard, VISA, or American Express -- Please do not transmit your Credit Card

numbers via e-mail, this is not a secure website! Please fax or telephone cardholders name, credit card number and

expiration date.

4. INTERNATIONAL CUSTOMERS: All international orders are payable in advance. Prices shown are in U.S

Dollars, checks shall be drawn on a major U.S. bank, all bank charges at customer's expense. Letters of Credit are not

acceptable.

5. SHIPPING TERMS: F.O.B West Linn, Oregon, unless specified otherwise.

6. PRICES: Subject to change without notice.

Orders may be placed by phone, fax, e-mail or regular mail.

Please do not transmit your Credit Card numbers via e-mail, this is not a secure website!

Laser Diodes, Optics, and Related Components - Optima

Credit Cards Accepted: MasterCard, VISA, or American Express

Telephone: (503) 638-2525

Fax: (503) 638-4545

Postal

address: 775 SW Long Farm Road, West Linn, Oregon 97068, U.S.A.

E-mail: sales@optima-optics.com

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: March 15, 2001

Laser Diodes, Optics, and Related Components - Optima

Laser Diodes

Mitsubishi | Sanyo | Sony | Toshiba | Hitachi

DIODES.PDF (84K) Click on the file name to download an Adobe PDF file covering this section.

Laser diodes continue to find new product applications as the lasing wavelength is pushed lower into the visible spectrum. The latest generation of Visible Laser Diodes

(VLD's) operate at or near 635nm; this wavelength being equivalent to a helium neon gas laser, is highly visible to the human eye. VLD's in the range from 635nm to 690nm

are replacing the traditional HeNe laser in many commercial products for good reasons: lower cost, compact size, and superior long-term reliability. Another intrinsic benefit,

laser diodes are generally better suited for battery operated devices and other low voltage applications.

While visible diodes are used extensively in commercial products, the near-infrared diodes are certainly not extinct. There are many applications still using lasers operating in

the 780nm~850nm range as some machine vision systems and sensors are optimized for near-infrared light sources. The near-infrared diodes may not be considered as

user-friendly as the VLD's; however, with the right tools, some of the inconveniences can be managed. In either case, visible or near-infrared, we stock a selection of the more

popular laser diodes from several different manufacturers.

Hitachi: Optima is no longer using, selling, or supporting Hitachi laser diodes. As of April 99 there is some stock available,

please refer to the Optima Laser Diode Close-Out Page for details.

MITSUBISHI Visible and Near-infrared Laser Diode Specifications

Several new diodes listed below are in stock now ....

ML1016R .... 658nm / 35mW / 5.6mm

ML1012R .... 685nm / 35mW / 5.6mm

ML60116R .... Near-infrared 785nm / 40mW / 5.6mm

ML60114R .... Near-infrared 785nm / 60mW / 5.6mm

ML64114R .... Near-infrared 785nm / 60mW / 9mm

For additional specifications, click on the part number listed in the table below:

Laser Diodes - 635nm to 1300nm - 3mW to 150mW

Part number Qty
1 - 49 Wavelength
(nm)
Max
laser
power
(mW)
Mode Package
Size
(dia)
Current
(Ith)
Typ (mA)
Current
(Iop)
Typ (mA)
Divergence (FWHM deg)
Parallel Perpendicular
ML1016R $41.70 658 35 S 5.6mm 45 85 8.5 22
ML1012R  $37.30 685 35 S 5.6mm 35 80 9.5 20
ML60116R $24.60 785 40 S 5.6mm 30 80 10 25
ML60114R $41.70 785 60 S 5.6mm 55 140 10 25
ML64114R $52.30 785 60 S 9mm 55 140 10 25
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SANYO Laser Diode Specifications
Several new diodes in stock ....
DL 3148-011 .... 635nm / 5mW / 5.6mm  / low cost
DL 3147-011 .... 645nm / 5mW / 5.6mm  / low cost
DL 4038-025 .... 635nm / 20mW / 9mm
DL 3147-041 .... 645nm / 5mW / 5.6mm
DL 3147-261 .... 645nm / 7mW / 5.6mm
DL 3149-054 .... 670nm / 5mW / 5.6mm
DL 4039-011 .... 670nm / 10mW / 9mm
DL 7032-001 .... Near-infrared 830nm / 100mW / 9mm
DL 8032-001 .... Near-infrared 830nm / 150mW / 9mm
DL 7140-201 .... Near-infrared 785nm / 70mW / 5.6mm
For detailed specifications, click on the part number listed in the table below:
Part number Qty
1 - 49 Wavelength
(nm)
Max
laser
power
(mW)
Mode Package
Size
(dia)
Current
(Ith)
Typ (mA)
Current
(Iop)
Typ (mA)
Divergence (FWHM deg)
Parallel Perpendicular
Laser Diodes - 635nm to 1300nm - 3mW to 150mW

DL3148-011 $22.50 635 5 S 5.6mm 40 55 8 30
DL3038-033 $35.30 635 5 S 9mm 30 40 8 35
DL4038-021 $73.00 635 10 S 9mm 35 55 8 30
DL4038-025 $337.00 635 20 S 9mm 45 80 7 25
DL3147-011 $9.70 645 5 S 5.6mm 30 40 7.5 30
DL3147-041 $16.90 645 5 S 5.6mm 45 60 7.5 30
DL3147-261 $18.30 645 7 S 5.6mm 45 60 7.5 30
DL3149-054 $14.60 670 5 S 5.6mm 30 45 8 33
DL4039-011 $32.80 675 10 S 9mm 40 60 8 30
DL7140-201 $50.90 785 70 S 5.6mm 30 100 7 17
DL7032-001 $212.70 830 100 S 9mm 40 140 7 18
DL8032-001 $365.00 830 150 S 9mm 40 185 7 18
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SONY Visible Diode Specifications
SLD1132VS .... 635nm / 5mW / 5.6mm package
SLD1134VL .... 655nm / 5mW / 5.6mm package / Self-pulsation type diode for low noise
For additional specifications, click on the part number listed in the table below:
Part number Qty
1 - 49 Wavelength
(nm)
Max laser
power
(mW) Mode Current
(Ith)
Typ (mA)
Current
(Iop)
Typ (mA)
Divergence (FWHM deg)
Parallel Perpendicular
SLD1132VS $29.20 635 5 S 50 60 7 32
SLD1134VL $16.50 655 5 S 65 75 8.5 35
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Laser Diodes - 635nm to 1300nm - 3mW to 150mW

TOSHIBA Visible Laser Diode Specifications

Toshiba TOLD 9441 MCDA .... 650nm / 7mW / 5.6mm .... Now in Stock !!

For additional specifications, click on the part number listed in the table below:

Part number Qty

1 - 49 Wavelength

(nm)

Max

laser

power

(mW)

Mode Current

(Ith)

Typ (mA)

Current

(Iop)

Typ (mA)

Divergence (FWHM deg)

Parallel Perpendicular

TOLD9441MCDA $22.50 650 7 S 40 50 8 28

TOLD9442MDA $13.25 650 5 S 30 35 8 28

TOLD9442M $11.80

TOLD9231MDA $33.30 670 5 M 50 60 10 32

TOLD9231M $22.60

TOLD9225MDA $38.60 670 10 S 45 70 8 18

TOLD9225M $35.40

The suffix letter "M" designates a Ø5.6mm package, the letter "F" designates a Ø9mm package.

The suffix letters "DA" indicates the diode package has test data attached - Po, Ith, Iop, wavelength, divergence, etc.

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: April 11, 2001

Laser Diodes - 635nm to 1300nm - 3mW to 150mW

Laser Diodes

Mitsubishi, Sanyo, Sony, and Toshiba — 635 nm to 830 nm, 3mW to 150mW

Sanyo visible and Near-Infrared Laser Diode Specifications:

Laser diodes continue to find new product applications as the lasing wavelength is pushed lower into the visible

spectrum. The latest generation of Visible Laser Diodes (VLD’s) operate at or near 635nm; this wavelength being

equivalent to a helium neon gas laser, is highly visible to the human eye. VLD’s in the range from 635nm to 690nm are

replacing the traditional HeNe laser in many commercial products for good reasons: lower cost, compact size, and

superior long-term reliability. Another intrinsic benefit, laser diodes are generally better suited for battery operated

devices and other low voltage applications. Please refer to the Optima website for additional information and

specifications — http://www.optima-optics.com

Pin reference diagram D

PD LD

Pin reference diagram A

1 2

Pin reference diagram B

LD PD

Pin reference diagram C

PDLD

Schematic Diagram of Laser Diode / Photodiode  Internal Circuit Connections:

Revised15MAR01

PART NUMBER PRICE WAVE

LENGTH

(nm)

MAX

LASER

POWER

(mW)

MODE THRESHOLD

CURRENT

TYP (mA)

OPERATING

CURRENT

TYP (mA)

PARALLEL

DIVERGENCE

FWHM (deg)

PERPENDICULAR

DIVERGENCE

FWHM (deg)

REF

BASE

DIMENSION

(mm)

ML 1016R

$41.70 658 35 S 45 85 8.5 22 B Ø5.6

ML 1012R

$37.30 685 35 S 35 80 9.5 20 B Ø5.6

ML 44126N

$25.20 785 8 S 25 40 11 29 A Ø9.0

ML 60116R

$24.60 785 40 S 30 80 10 25 B Ø5.6

ML 60114R

$41.70 785 60 S 55 140 10 25 B Ø5.6

ML 64114R

$52.30 785 60 S 55 140 10 25 B Ø9.0

Mitsubishi Visible and Near-Infrared Laser Diode Specifications:

PART NUMBER PRICE WAVE

LENGTH

(nm)

MAX

LASER

POWER

(mW)

MODE THRESHOLD

CURRENT

TYP (mA)

OPERATING

CURRENT

TYP (mA)

PARALLEL

DIVERGENCE

FWHM (deg)

PERPENDICULAR

DIVERGENCE

FWHM (deg)

REF

BASE

DIMENSION

(mm)

DL 3148-011

$22.50 635 5 S 40 55 8 30 C Ø5.6

DL 3038-033

$35.20 635 5 S 30 40 8 35 C Ø9.0

DL 4038-031

$73.00 635 10 S 35 55 8 30 C Ø9.0

DL 4038-025

$337.00 635 20 S 45 80 7 25 C Ø9.0

DL 3147-011

$9.70 645 5 S 30 40 7.5 30 C Ø5.6

DL 3147-041

$16.90 645 5 S 45 60 7.5 30 C Ø5.6

DL 3147-261

$18.30 645 7 S 45 60 7.5 30 D Ø5.6

DL 3149-054

$14.60 670 5 S 30 45 8 33 C Ø5.6

DL 4039-011

$32.80 675 10 S 40 60 8 30 C Ø9.0

DL 3149-070

$77.70 685 5 M 40 50 8.5 37 C Ø5.6

DL 7140-201

$50.90 785 70 S 30 100 7 17 D Ø5.6

DL 7032-001

$212.70 830 100 S 40 140 7 18 C Ø9.0

DL 8032-001

$384.00 830 150 S 40 185 7 18 C Ø9.0

New product

Toshiba Visible Laser Diode Specifications:

PART NUMBER PRICE WAVE

LENGTH

(nm)

MAX

LASER

POWER

(mW)

MODE THRESHOLD

CURRENT

TYP (mA)

OPERATING

CURRENT

TYP (mA)

PARALLEL

DIVERGENCE

FWHM (deg)

PERPENDICULAR

DIVERGENCE

FWHM (deg)

REF

BASE

DIMENSION

(mm)

SLD 1132 VS

$29.20 635 5 S 50 60 7 32 A Ø5.6

SLD 1134 VL

$16.50 655 5 S 65 75 8.5 35 F Ø5.6

Sony Visible Laser Diode Specifications:

PART NUMBER PRICE WAVE

LENGTH

(nm)

MAX

LASER

POWER

(mW)

MODE THRESHOLD

CURRENT

TYP (mA)

OPERATING

CURRENT

TYP (mA)

PARALLEL

DIVERGENCE

FWHM (deg)

PERPENDICULAR

DIVERGENCE

FWHM (deg)

REF

BASE

DIMENSION

(mm)

TOLD 9442 M

$11.80 650 5 S 30 35 8 28 C Ø5.6

TOLD 9442 MDA

$13.25

TOLD 9441 MCDA

$22.50 650 7 S 40 50 8 28 D Ø5.6

TOLD 9231 M

$22.60 670 5 M 50 60 10 32 C Ø5.6

TOLD 9231 MDA

$33.30

TOLD 9225 M

$35.40 670 10 S 45 70 8 18 C Ø5.6

TOLD 9225 MDA

$38.60

LD PD

Pin reference diagram A Pin reference diagram C Pin reference diagram D

LD PD

Pin reference diagram F

Revised01JAN01

Schematic Diagram of Laser Diode / Photodiode  Internal Circuit Connections:

Laser Diodes / page 2 of 2

Laser Diode Close-Out List

To check current stock availability please contact: sales@optima-optics.com

Hitachi

Part number Qty

1 - 49 Wavelength

(nm)

Max

laser

power

(mW)

Mode

Current

(Ith)

Typ

(mA)

Current

(Iop)

Typ

(mA)

Divergence (FWHM

deg)

Parallel Perpendicular

HL6319G * $65.90 635 10 S 50 70 8 31

HL6714G $62.50 670 10 S 35 ~45 8 22

HL6726MG

** $52.50 685 30 S 50 ~95 8.5 19

HL1326MF $95.20 1310 5 M 8 ~25 30 40

* The internal circuit configuration of the HL6313G, HL6319G, HL6726MG, HL6738MG allows

operation with a single positive supply voltage -- this also allows grounding the laser diode case and

the heatsink structure if used.

** HL1326MF and HL6726MG have a Ø5.6mm package, all other Hitachi diodes listed above have a

Ø9mm package.

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: April 09, 2001

Laser Diodes Close-out List

Laser Diode Specifications

Optima is no longer recommending, selling, or supporting

Hitachi laser diodes.

All Hitachi laser diode specifications have been removed from

the Optima website.

Possible substitute part: None

Detailed specifications and pricing for laser diodes from other

manufacturers are listed in the main Optima laser diode page.

Please click on the following link for more information:

http://www.optima-optics.com/ld.htm

OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 27, 2000

Laser Diode Specifications - HL6319G

Laser Diode Specifications

Optima is no longer recommending, selling, or supporting

Hitachi laser diodes.

All Hitachi laser diode specifications have been removed from

the Optima website.

Possible substitute

parts: Toshiba TOLD9225M (Ø5.6mm package)

Sanyo DL4039-011 (Ø9mm package)

Sanyo DL3147-261 (Ø5.6mm package)

Detailed specifications and pricing for laser diodes from other

manufacturers are listed in the main Optima laser diode page.

Please click on the following link for more information:

http://www.optima-optics.com/ld.htm

OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 27, 2000

Laser Diode Specifications - HL6714G

Laser Diode Specifications - Toshiba TOLD9225M

TOLD9225.PDF (83K) Click on the file name to download an Adobe PDF file covering this page.

670nm / 10mW / 5.6mm package

Absolute Maximum Ratings (Tc=25ºC)

Characteristic Symbol Value Unit

TOLD9225M 5.6mm Package

Internal Circuit & Pin Connections

Optical output power Po 10 mW

Laser diode reverse voltage VR(LD) 2 V

Photodiode reverse voltage VR(PD) 30 V

Operating temperature Topr -10 to +60 ºC

Storage temperature Tstg -40 to +85 ºC

Optical and Electrical Characteristics (Tc=25ºC)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith - 40 60 mA -

Operating current Iop - 60 80 mA Po=10mW

Laser diode operating voltage Vop - 2.4 3.0 V Po=10mW

Lasing wavelength λp660 670 680 nm Po=10mW

Beam divergence (parallel) θ // 5 8 11 deg Po=10mW (FWHM)

Beam divergence (perpendicular) θ ⊥ 15 18 23 deg Po=10mW (FWHM)

Monitor current Im 0.1 0.2 0.5 mA Po=10mW

Photodiode dark current ID (PD) - - 100 nA VR=5V

Toshiba TOLD9225M - Laser Diode Specifications

Photodiode total capacitance CT (PD) - - 20 pF VR=5V, f=1MHz

Astigmatism As - 6 - microns -

Disclaimer: The laser diode information summarized above is based on the respective diode manufacturer's commercial catalog and/or data sheet specifications. The data is presumed to be accurate; however, it is subject to change without notice. Optima makes no

representation as to the accuracy of the information and does not assume any responsibility for errors or omissions contained herein. The user must refer to the manufacturers specifications for details concerning the intended application and operation, diode limitations,

and safety.

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Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Toshiba TOLD9225M - Laser Diode Specifications

For current pricing and stock availability please contact:

Optima Precision Inc. 775 SW Long Farm Road West Linn, Oregon 97068 U.S.A.

Phone: (503) 638-2525 Fax: (503) 638-4545 email: optima@optima-optics.com

Website: http://www.optima-optics.com

Disclaimer: The laser diode information summarized above is based on the respective diode manufacturers commercial catalog and/or data sheet specifications.

The data is presumed to be accurate; however, it is subject to change without notice. Optima makes no representation as to the accuracy of the information and does not

assume any responsibility for errors or omissions contained herein.The user must refer to the manufacturers specifications for details concerning the intended application

and operation, diode limitations, and safety.

Toshiba TOLD9225M

Laser Diode Specifications

Absolute Maximum Ratings (Tc=25 C)

The Toshiba TOLD9225M is an index guided laser diode with a multi-quantum well

structure. The maximum optical output is 10mW with a typical operating wavelength

of 670nm. The TOLD9225M has a ∅5.6mm package.

Operating and Electrical Characteristics (Tc=25 C)

Characteristic Symbol Value Unit

Optical output power Po 10 mW

Laser diode reverse voltage V

R(LD)

Photodiode reverse voltage V

R(PD)

30 V

Operating temperature Topr -10 to +60 °C

Storage temperature Tstg -40 to +85 °C

Package Type: Ø5.6mm

Revised11JUN99

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith  40 60 mA 

Operating current Iop  60 80 mA Po=10mW

Operating voltage Vop  2.4 3.0 V Po=10mW

Lasing Wavelength

p 660 670 680 nm Po=10mW

Beam divergence (parallel)

θ//

5 8 11 deg Po=10mW, (FWHM)

Beam divergence (perpendicular)

θ⊥

15 18 23 deg Po=10mW, (FWHM)

Monitor current Im 0.1 0.2 0.5 mA Po=10mW

Photodiode dark current I

D(PD)

100nAV

R(PD)

=5V

Photodiode total capacitance C

T(PD)

20pFV

R(PD)

=5V, f=1MHz

Astigmatism As  6  microns 

Ø5.6mm

Internal Circuit

123

Glossary, Application Notes, and FAQ's

Terms Describing Laser Diode

Absolute Maximum Ratings Terms Describing Laser Diode

Electro-optical Characteristics Terms Describing Laser Diode

Optical Characteristics

FAQ's and Laser Diode Basics Question or Comments Ordering Information

NOTES.PDF (61K) Click on the file name to download an Adobe PDF file covering this section.

Terms Describing Laser Diode Absolute Maximum Ratings:

Commonly used abbreviations are shown in parenthesis.

Case Temperature (Tc) – Device temperature measured at the base of the package.

Operating Temperature (Topr) – Range of case temperatures within which the device may be safely operated.

Optical Power Output (Po) – Maximum allowable instantaneous optical power output in either continuous (CW) or

pulse operation. Up to this point, there are no kinks in the optical power output vs. forward current curve.

Important note: The optical power output specification is applicable to the bare laser diode – it does not allow for,

or take into consideration, any optics that may be in the optical path, such as a collimating lens located between the

laser diode and a power meter or other detector.

Caution: Do not exceed the specified optical power output -- even an instantaneous (less than a nanosecond)

application of excessive current or voltage may cause deterioration or catastrophic optical damage (COD) to the

facets.

Reverse Voltage (VR) – Maximum allowable voltage when reverse bias is applied to the laser diode or photodiode.

For laser diodes with an internal monitor photodiode, the reverse voltage is specified for the laser diode as VR (LD)

and for the photodiode as VR (PD).

Storage Temperature (Tstg) – Range of case temperatures within which the device may be safely stored.

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Laser Diode Application Notes - Optima Precision Inc.

Terms Describing Laser Diode Electro-optical Characteristics:

Commonly used abbreviations are shown in parenthesis.

Automatic Power Control (APC) – Laser diode drive circuit based on a photodiode feedback loop that monitors the

optical output and provides a control signal for the laser diode which maintains the operation at a constant optical

output level. See additional information below on Drive Circuits and Operating in Constant Power Mode vs.

Constant Current Mode.

Automatic Current Control (ACC) or Constant Current – Laser diode drive circuit that operates the laser diode

without a photodiode feedback loop, the laser diode is simply driven at constant current. The optical output will

fluctuate as the laser diode temperature changes. See additional information below on Drive Circuits and Operating

in Constant Power Mode vs. Constant Current Mode.

Fall Time – Time required for the optical output to fall from 90% to 10% of its maximum value.

Mode Hopping – As the temperature of the laser chip increases, the operating wavelength also increases. Rather

than a smooth, continuous transition in the operating wavelength, the wavelength makes discrete jumps to the

longer wavelength modes. The phenomenon is referred to as "mode hopping" or "mode jumps".

Monitor Current (Im) – The current through the photodiode, at a specified reverse bias voltage, when the laser diode

is producing its typical optical power output. Note: The manufacturers data may list specifications based on

operation at lower optical output power than the devices absolute maximum rating. For example, the test condition

might be 20mW for a diode with an absolute maximum optical output of 30mW.

Operating Current (Iop) – The amount of forward current through the laser diode necessary to produce the specified

typical optical output at a specified operating temperature.

Operating Voltage (Vop) – The forward voltage across the laser diode when the device produces its specified

typical optical output at a specified operating temperature.

Photodiode Dark Current (ID(PD)) – The current through the reverse biased internal monitor photodiode when the

laser diode is not emitting.

Positional Accuracy (∆x, ∆y, ∆z) – Also referred to as emission point accuracy. These specifications define the

positional accuracy of the laser diode emitter with respect to the device package. Delta x and delta y are measured

as the planer displacement of the chip from the physical axis of the package. Delta z is measured perpendicular to

the reference surface. Specifications may list both angular error expressed in degrees and the linear error in microns.

Rise Time – Time required for the optical output to rise from 10% to 90% of its maximum value.

Slope Efficiency (SE) or (η) – Also referred to as differential efficiency. This is the mean value of the incremental

change in optical power for an incremental change in forward current when the device is operating in the lasing

region of the optical power output vs. forward current curve.

Threshold Current (Ith) – The boundary between spontaneous emission and the stimulated emission shown on the

optical power output vs. forward current curve. Below the threshold current point, the output resembles the

incoherent output from a LED; at or above the specified threshold current, the device begins to produce laser output.

Once past the threshold point, stimulated emission is achieved and the optical output increases significantly for a

small increase in forward current.

Laser Diode Application Notes - Optima Precision Inc.

Wavelength (λp) – The wavelength of light emitted by the laser diode. For a single mode device, this is the

wavelength of the single spectral line of the laser output. For a multi-mode device, this is the wavelength of the

spectral line with the greatest intensity.

Top of Page

Terms Describing Laser Diode Optical Characteristics:

Commonly used abbreviations are shown in parenthesis.

Aspect Ratio (AR) – The ratio of the laser diode's divergence angles, θ⊥ (perpendicular) and θ// (parallel). A diode

with a 27º perpendicular divergence and a 9º parallel divergence has an elliptical beam with an aspect ratio of 3:1.

Please refer to the laser diode mounting kit page to see the difference between a nearly circular beam and the typical

elliptical beam.

Astigmatism (As) or (∆As) – The laser beam appears to have different source points for the directions perpendicular

and parallel to the junction plane. The astigmatic distance is defined as the distance between the two apparent

sources. A laser diode with a large amount of astigmatism must have the astigmatism corrected (or reduced) if the

laser diode output is to be accurately focused – otherwise, the resulting focused beam will be astigmatic.

Beam Divergence (θ⊥) and (θ//) – Also referred to as radiation angles. The beam divergence is measured as the full

angle and at the half-maximum intensity point, known as Full Width Half Maximum or FWHM. Angular

specifications are provided for both the perpendicular axis and parallel axis.

Coupling Efficiency – The beam from the laser diode diverges as defined by the beam divergence specification. In

coupling the laser diodes widely divergent beam into a lens or other device such as a fiber, the result is typically less

than 100%. Coupling efficiency is defined as the percentage of total power output from the laser which effectively

enters the external device (i.e. a lens or fiber).

Far Field Pattern (FFP) – Intensity profile of the beam when measured at a distance from the front facet of the laser

diode chip.

Multimode Diodes – Laser diodes have either single or multiple longitudinal modes. For a multimode laser diode

the emission spectrum consists of several individual spectral lines with a dominant line (line with the greatest

intensity) occurring at the nominal wavelength of the device. Multimode laser diodes are often desirable as

problems with mode hops are suppressed – consequently, multimode diodes generally have a better signal-to-noise

ratio.

Near Field Pattern (NFP) – Intensity profile of the beam when measured at the front facet of the laser diode chip.

Numerical Aperture (NA) – The numerical aperture describes the ability of a lens to collect light from a source

placed at its focal point. The maximum acceptance angle θ, is measured from the center axis of the cone of light to

the outside or surface of the cone.

Polarization Ratio – The output from a single cavity laser diode is linearly polarized parallel to the laser junction.

Spontaneous emission with a random polarization and/or with a polarization perpendicular to the laser junction is

also present. The polarization ratio is defined as the parallel component divided by the perpendicular component.

For a diode operating near its maximum power the ratio is typically greater than 100:1. When operating near the

threshold point, the ratio would be considerably lower as the spontaneous emission becomes more significant.

Laser Diode Application Notes - Optima Precision Inc.

Single-mode Diodes – Laser diodes have either single or multiple longitudinal modes. For a single-mode laser diode

the emission spectrum consists of a single spectral line occurring at the nominal wavelength of the device. At output

levels near threshold, multiple spectral lines may be present in the emission spectrum however, these secondary

lines decrease as the output increases.

Top of Page

FAQ's and Laser Diode Basics:

There are a number of precautions listed in the laser diode manufacturer's catalogs that should be observed when

working with laser diodes. Below are a few points that might be helpful if you're new to this field:

Safety Considerations – The laser beam emitted by the laser diode is harmful if aimed directly into the human eye.

Never look directly into the laser beam or at any specular reflections of the laser beam.

Electro-Static Discharge – Laser diodes are extremely sensitive devices and visible laser diodes (VLD's) tend to be

the most sensitive type. The handling precautions outlined by the laser diode manufacturers are not overstated –

good work habits require personal grounding straps and grounded equipment. ESD does damage laser diodes!

Drive Circuits – Laser diodes should always be driven by either a Constant Current or Automatic Power Control

(APC) circuit (the APC circuit may also be referred to as a Constant Power Mode circuit). For simplicity, an APC

circuit is generally preferred, especially if the ambient temperature fluctuates. Typical circuits include slow-start or

soft-start circuitry and provisions to ensure that spikes, surges, and other switching transients are eliminated.

Regardless of type of circuit used, the drive current must not overshoot the maximum operating level - exceeding

the maximum optical output for even a nanosecond will damage the mirror coatings on the laser diode end facets.

A standard laboratory power supply is not suitable for driving a laser diode.

Examples of the recommended drive circuits can be found in most manufacturer's laser diode data books. Unless

you have prior experience with laser diodes and/or their drive circuits, this is not a place to reinvent the wheel - it

can be very frustrating and expensive.

Operating in Constant Power Mode vs. Constant Current Mode – The characteristics of a laser diode are highly

dependent on the temperature of the laser chip. For instance, the wavelength of a typical GaAlAs diode will increase

on the order of 0.25nm for a 1°C rise in temperature. With a single mode diode, the change in wavelength may

produce an undesirable effect known as “mode hops or mode-hopping”.

Other characteristics directly related to laser diode's operating temperature are; threshold current, slope efficiency,

wavelength, and lifetime. Perhaps the most important characteristic is the effect of temperature on the relationship

between the diode's optical output and the injection current. In this case, the optical output decreases as the

operating temperature increases or, conversely the optical output increases as the operating temperature

decreases. Without limits and safeguards built into the laser drive circuit, a wide swing in operating temperature

could be catastrophic. However, there are two techniques commonly used to achieve a stable optical output from a

laser diode:

Constant Current mode combined with precise control of the diode's operating temperature is generally the

preferred operating method. The constant current mode provides a faster control loop and a precision current

Laser Diode Application Notes - Optima Precision Inc.

reference for accurately monitoring the laser current. Further, in many cases the laser diode's internal photodiode

may exhibit drift and have poor noise characteristics. If performance of the internal photodiode is inferior, the

diode's optical output is likely to be noisy and unstable as well.

Constant Current operation without temperature control is generally not desirable – if the operating temperature of

the laser diode decreases significantly, the optical power output will increase and could easily exceed the absolute

maximum.

Constant Power or APC mode precludes the possibility of the optical power output increasing as the laser diode's

temperature decreases. However, when operating in the constant power mode and without temperature control,

mode hops and changes in wavelength will still occur. Further, if the diode's heat sink is inadequate and the

temperature is allowed to increase, the optical power will decrease. In turn, the drive circuit will increase the

injection current, attempting to maintain the optical power at a constant level. Without an absolute current limit

thermal runaway is possible and the laser may be damaged and/or destroyed.

Summary – for stable operation and maximum laser lifetime – temperature control and constant current operation is

generally the best solution. However, if precise temperature control of the laser diode is not practical, then an APC

circuit should be used.

Drive Circuit Precautions – Even when a laser diode is driven by a suitable drive circuit, watch for possible

intermittent or unreliable connections between the laser diode and the drive circuit. An intermittent contact in the

photodiode feedback circuit will very likely destroy the laser diode. One not-so-obvious component to consider is

the power control. If a potentiometer is used for setting the laser diode's power, evaluate the circuit design to

determine the failure mode if the potentiometer's wiper breaks contact with the resistive element. Also, never use a

switch or relay to make or break the connection between the drive circuit and the laser diode.

Power Measurements – The output from a laser diode must be measured with an optical power meter or a

calibrated, large area photodiode. It's not practical or safe to estimate a laser diode's output power based on the

diode manufacturers minimum-maximum data as each diode has unique operating characteristics and manufacturing

tolerances.

Remember, once the laser diode is past the threshold point, stimulated emission is achieved and the optical output

increases significantly for a small increase in forward current. Therefore, a very slight increase in drive current may

cause the optical output to exceed the absolute maximum. Even with a visible diode, it's not feasible to judge the

laser output by eye, an optical power meter or calibrated photodetector must be used.

Also, be sure to include optical losses through any lenses or other components when making measurements or

calculations.

Laser Diode Application Notes - Optima Precision Inc.

Operating Temperature and Heat Sinks – In most applications, laser diodes require heat sinks especially when

operated continuously (CW). Without a heat sink the laser diode junction temperature will quickly increase causing

the optical output to degrade. If the laser diode temperature continues to rise, exceeding the maximum operating

temperature, the diode can be catastrophically damaged or the long term performance may degrade significantly.

Generally, a lower operating temperature will help extend the diode's lifetime as the laser diode's reliability and

MTTF are directly related to the junction temperature during operation. VLD's with lower wavelengths, i.e.

~635nm, appear to be more sensitive to temperature and users might consider thermoelectric cooling if operating in

an environment with elevated ambient temperatures or if operational stability is a prerequisite. Also, using a small

amount of a non-silicone type heat sink compound will improve thermal conductivity between the diode and heat

sink.

Lifetime note: If the laser diode's operating temperature is reduced by about 10 degrees, the lifetime will

statistically double.

Windows – Keep the laser diode window, and any other optics in the path, clean. Dust or fingerprints will cause

diffraction or interference in the laser output that can result in lower output or anomalies in the far-field pattern. The

window should be cleaned using a cotton swab and ethanol when necessary.

Cyanoacrylate Adhesive Precaution – "Super glue" should not be used anywhere near laser diodes - or near any

other optical component - outgassing may fog windows and other optical surfaces. The amount of fogging, or the

time required to observe the fogging, varies with different products. If you're in doubt, test the adhesive over time at

an elevated temperature and in a sealed container. For example, place a drop of the adhesive in question on a piece

of glass, something like a microscope slide, then place the sample in a plastic bag and seal the bag.

Top of Page

Important Notice to Purchaser:

All statements, technical information and recommendations related to Optima's products are based on information we believe to be reliable, but the accuracy or completeness

thereof is not guaranteed, and the following is made in lieu of all warranties expressed or implied:

Seller's and manufacturer's only obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer shall be liable for any

injury, loss or damage, direct or consequential, arising out of the use or the inability to use the product. Before utilizing the product, the user should determine the suitability

of the product for its intended use. The user assumes all risk and liability whatsoever in connection with such use.

No statement or recommendation not contained herein shall have any force or effect unless in written agreement signed by officers of the seller and manufacturer.

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Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Laser Diode Application Notes - Optima Precision Inc.

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In order to expedite processing e-mail questions, please read the list below:

Be sure your browser is set to English characters.●

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send attachments, we may refuse to accept any e-mail from you. If you have something you cannot

send in the text of your e-mail, please fax it to (503) 638-4545.

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If you prefer to be contacted by phone or fax, also provide those numbers.

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All e-mail is handled by one person, and routed to the appropriate department. This means that your

request, while important, is one of many. A busy day can mean delays in responding to some

messages, so it may take a few days to respond. We endeavor to respond to all e-mails within 24 hours

(with the exception of Friday and weekends). To help, please keep this in mind:

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Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

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Laser
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Diode
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Kits
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Laser Diode
Optics
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Lenses
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Modules
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Diode
Laser
Modules
Collimated
Diode
Lasers
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Power
Meter
Anamorphic
Prisms Spherical
Achromats Tools and
Accessories Precision X-Y
Positioners
Glossary and Application Notes ORDERING
INFORMATION Request for Quote
via  E-mail
New Mitsubishi Laser Diodes
 Mitsubishi 35mW 658nm Laser Diode -- ML1016R -- Ø5.6mm package
 Mitsubishi 35mW 685nm Laser Diode -- ML1012R -- Ø5.6mm package
 Mitsubishi 50mW 785nm Laser Diode -- ML64114R -- Ø9mm package
New Sanyo Laser Diodes
 Sanyo 20mW 635nm Laser Diode -- DL4038-025 -- Ø9mm package
Laser Diodes,  Optics,  and  Related Components - Optima

 Sanyo 70mW 785nm Laser Diode -- DL7040-201 -- Ø5.6mm package
 Sanyo 100mW 830nm Laser Diode -- DL 7032-001 -- Ø9mm package
 Sanyo 150mW 830nm Laser Diode -- DL 8032-001 -- Ø9mm package
Ophir PD 200 Optical Power Meter
 New Low Price Includes Photodiode Sensor with Two Calibrated
Wavelengths
Diode Laser Modules
 Diode Laser Modules for OEM Applications -- Low Cost 635nm and
650nm
Laser Diode Optics and Components
NEW LENS — 4mm FL, 0.50 NA Molded Glass Asphere for
Laser Diodes
Laser Diode Collimating and Objective Lenses
Multi-element Spherical Glass Lenses
Single element Molded Glass Aspheric Lenses
Injection Molded Plastic Aspheric Lenses
Achromats, Doublets, Singlets, Mirrors, Beamsplitters etc...
Laser Diode Mounting Kits
Laser Diodes,  Optics,  and  Related Components - Optima

Convenient laser diode mounting systems for 5.6 mm or 9 mm diodes, a variety of lens

options for collimating or focusing the laser diode and several mechanical configurations

available...

New mounting kits not shown in the Optima printed catalog are described here:

LDM 1100 KIT -- laser diode mount attaches to a standard optical bench post...

ADP 9056 KIT -- optics package for use with LDM 1100 KIT, includes 3 lenses...

LDM 3400 KIT -- with 6 different interchangeable apertures for beam shaping...

LDM 4100 KIT -- molded glass aspheric lens with 3 axis lens adjustment...

LDM 4200 KIT -- an extra long focal length lens with a 0.14 NA...

LDM 4500 KIT -- a short focal length lens provides a smaller collimated beam...

Collimated Diode Lasers

A laser diode and collimating lens pre-assembled into a compact cylindrical housing, the

laser diode is collimated or focused to a specified distance

Anamorphic Prisms

Used for laser diode beam shaping (i.e. to circularize a laser diodes elliptical beam)

Visible and Near-Infrared Diode Laser Modules

With optical power starting at 1mW and available up to 50mW, operating in the visible

range from 635nm to 685nm and near-infrared wavelength of 780nm.

Diode Laser Modules for OEM Applications -- Low Cost 635nm and 650nm

Line Generating Modules and Aspheric Line Generating Lenses

Laser Diodes, Optics, and Related Components - Optima

2-Axis and 4-Axis Precision Positioners

A unique mechanical component used to accurately position optics and optoelectronic

components. Very compact and economical, ideally suited for use with lasers diodes, modules

and fibers...

Technical Information / Application Notes

Company Profile:

Optima Precision manufactures high-quality optics, specialized mechanical components, and

instruments for use with laser diodes. Optima also supplies laser diodes from many of the leading

manufacturers i.e. Mitsubishi – Sanyo – Sony Toshiba

Offering both aspheric and multi-element lenses, Optima lenses are specifically designed for

collimating or focusing laser diodes. Lenses are available in either glass or plastic materials with a

wide selection of focal lengths, numerical apertures, and mounting configurations. Cost effective for

both OEM applications and/or R&D.

Several different laser diode mounting kits are offered – these mounting systems provide an

essential heatsink for the standard Ø5.6mm and Ø9mm laser diode and use Optima's proprietary

laser diode optics. The LDM 3400 KIT has interchangeable apertures for beam shaping.

Precision Positioners – A unique mechanical component used to accurately position optics and

optoelectronic components. Very compact and economical, ideally suited for use with lasers diodes,

modules and fibers...

Optima Precision Inc. / Contact, Terms and Ordering Information:

1. MINIMUM ORDER REQUIREMENTS: U.S. orders $50.00; International orders $100.00

2. TERMS OF PAYMENT: Credit card, C.O.D, or prepayment for all new customers and first time orders. Net 30

Days for established customers in good standing (subject to credit approval and periodic review). Past due balances are

subject to a late charge of 1.5% per month. Date of invoice establishes the start of the 30-day payment period.

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Dollars, checks shall be drawn on a major U.S. bank, all bank charges at customer's expense. Letters of Credit are not

acceptable.

5. SHIPPING TERMS: F.O.B West Linn, Oregon, unless specified otherwise.

6. PRICES: Subject to change without notice.

Orders may be placed by phone, fax, e-mail or regular mail.

Please do not transmit your Credit Card numbers via e-mail, this is not a secure website!

Laser Diodes, Optics, and Related Components - Optima

Credit Cards Accepted: MasterCard, VISA, or American Express

Telephone: (503) 638-2525

Fax: (503) 638-4545

Postal

address: 775 SW Long Farm Road, West Linn, Oregon 97068, U.S.A.

E-mail: sales@optima-optics.com

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: March 15, 2001

Laser Diodes, Optics, and Related Components - Optima

Laser Diode Mounting Kits

If your work involves laser diodes, you’ll appreciate the

benefits of Optima’s laser diode mounting systems.

Components in the system facilitate mounting a laser diode,

collimating or focusing the beam, and aligning the beam with

other optics or electro-optical components. Optima’s laser

diode mounting kits offer a quick and cost effective solution

for mounting a Ø5.6mm or Ø9mm laser diode. All of the

mounting kits (except the LDM 1100) include the collimating

lens, a black anodized aluminum housing, and the hardware

required to mount your laser (the laser diode is not included).

All of the collimating lenses are intended for use with laser

diodes in the 635nm to 830nm range.

LDMKITS.PDF (207K) Click on the file name to download an Adobe PDF file covering this section.

Laser Diode Mounting Kits For 5.6 mm and 9.0 mm Diameter Laser Diodes

Model Comparison and Specifications:

Part

Number Price

Each Features and

Attributes X-Y

Adjust Collimating

Lens Type Collimating

Lens P/N

Laser Diode

Base

Dimensions

Housing

Dimensions

Collimated

Beam Size

(mm) note

Focused

Beam

Size

(microns)

note 5

Minimum

Working

Distance

(mm)

LDM

1100

KIT $50.40 Optical bench

mount, no optics no Optics not included,

use ADP 9056 KIT listed

below

Ø5.6 &

9.0mm Ø25.3 x

10.4mm Optics not included,

use ADP 9056 KIT listed below

ADP

9056

KIT (1,4) $130.00 Optics kit for

LDM 1100 KIT no Lenses noted below (4)

no laser diode mount included

use LDM 1100 KIT (above)

Ø5.6 &

9.0mm Ø25.3 x

14.9mm

Specifications vary with the

different optics included with this

kit

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

LDM
3300
KIT (3) $54.60 Small collimated
beam no Glass Asphere 305-0464-780 Ø5.6 &
9.0mm Ø11 x
17mm  0.85 x 3.73  20 x 9.6  6 mm
LDM
3400
KIT (1,2,) $74.00 Aperture for
beam shaping no Multi-element 336-1027-xxx
Ø9.0mm
Ø12.7 x
18.5mm
    Specifications vary with the
different apertures included with this
kit
LDM
3456
KIT (1,2,) Ø5.6mm
LDM
3406
KIT (1,2,) $89.25 Interchangeable
apertures for
beam shaping  no Multi-element 336-1027-xxx
Ø9.0mm
Ø12.7 x
18.5mm
 Specifications vary with the
different apertures
included with this kit
LDM
3457
KIT (1,2,) Ø5.6mm
LDM
3500
KIT (3)  $69.30  Long FL lens
for small beam
at long distance  no Glass Asphere 305-8040-780  Ø5.6 &
9.0m  Ø11 x
17mm  1.68 x 5.30  50 x 23  90 mm
LDM
3600
KIT (1) $89.25  Best beam
quality  yes  Multi-element 336-1027-xxx  Ø9.0mm Ø11 x
20.6mm 0.98 x 4.06 45 x 17  42 mm
LDM
3700
KIT (1,3)  $67.20  Best beam
quality  no  Multi-element 336-1027-xxx  Ø5.6 &
9.0mm  Ø11 x
17mm  0.98 x
4.06   27 x 21   16 mm 
LDM
3800
KIT (1,3)  $67.20 Best beam
quality  no  Multi-element 336-1027-xxx  Ø5.6 &
9.0mm Ø11 x
18mm
LDM
3900
KIT (3) $54.60  Good beam
quality, smaller
focused beam no Glass Asphere 305-0065-780  Ø5.6 &
9.0mm   Ø11 x
17mm  1.37 x 5.12  24 x 10.5 21 mm 
LDM
4000
KIT (3) $43.70  Lowest cost no Plastic asphere 300-0360-780  Ø5.6 &
9.0mm   Ø11 x
17mm  0.92 x 3.17 19.5 x 8.6  8 mm
LDM
4100
KIT  $77.20 same as LDM
3900  yes  Glass
Asphere  305-0065-780   Ø5.6 &
9.0mm    Ø11 x
17mm  1.37 x 5.12  45 x 18.5  45 mm
LDM
4200
KIT
(3)
 $50.40
 Low cost, long
FL lens for
smallest beam at
long distance
no Plastic asphere 300-0395-780 Ø5.6 &
9.0mm Ø11 x
25.5mm 3.38 x 4.65  51 x 36.1 153 mm
Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

LDM

4500

KIT (3) $43.70 Low cost, small

collimated beam no Plastic

asphere 300-0380-780 Ø5.6 &

9.0mm Ø11 x

17mm 0.74 x 2.89 26.5 x 7.3 4 mm

LDM

5000

KIT $278.00

Excellent beam

quality, large

diameter

collimated beam

yes Multi-element 336-0395-780 Ø9.0mm Ø25.4 x

27mm 1.52 x 5.71 30 x 15.5 12 mm

Notes:

1) Please specify collimating lens 336-1027-660 (for visible diodes) or 336-1027-785 (for near-infrared diodes).

2) The LDM 3400 and LDM 3456 KIT's include one aperture; the LDM 3406 and LDM 3457 include six

interchangeable apertures.

3) These kits are also available for Ø5.6mm laser diodes – the P/N changes to LDM 3356, 3556, 3756, 3856, 3956,

4056, 4256, and 4556.

4) The ADP 9056 KIT must be used with the LDM 1100 KIT. The ADP 9056 KIT includes the lens housing for

both Ø5.6mm and Ø9.0mm laser diodes, mounting hardware, and three collimating lenses: Part numbers

336-1027-660 or 336-1027-785; 305-0065-780; and 305-8040-780.

5) The reference data listed for a collimated and/or focused beam size is only intended as a "typical" example

based on a Hitachi laser diode p/n HL6312G, operating at 2mW. The data was measured using a Photon Model

1180 BeamScan with a large aperture head for the collimated beam and a high resolution head for the focused

beam measurements. The data will likely be different when another laser diode is measured and/or the operating

power is changed.

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LDM 1100 KIT – Laser Diode Mount for Ø5.6mm and Ø9.0mm Diodes

The LDM 1100 Laser Diode Mount is shown below in the left frame. This convenient mount facilitates mounting the popular Ø5.6mm and Ø9.0mm laser diodes on a standard

optical bench post with a #8-32 thread (the post is not included in the kit).

Often when we’re working in the lab with various laser diodes and evaluating different optical assemblies, we find it very desirable to have the diode mounted in a heat

sink/mount that provides direct access to the front of the diode. With unobstructed access to the diode’s output, it’s possible to position lenses or other optical components

using a separate component holder and/or translation stage. Using the LDM 1100, the diode’s base is firmly clamped against the heat sink surface and the diode’s pins are

accessible from the back side of the mount. A clearance hole on the back side of the mount permits using our laser diode socket (P/N 900-8060-000) which greatly improves

reliability in connecting the diode with a drive cable.

Note: The LDM 1100 KIT includes the heat sink/mount and mounting hardware for both Ø5.6mm and Ø9.0mm laser diodes. There are no optics included in the LDM 1100

KIT — the ADP 9056 Optics Kit shown below in the right frame is designed to be used with the LDM 1100 — the ADP 9056 is described in the following section and should

be ordered with the LDM 1100 KIT.

P/N LDM 1100 KIT ... Unit price (Qty 1- 4) $50.40 each

LDM 1100 KIT ADP 9056 KIT

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

ADP 9056 KIT – Optics for LDM 1100 KIT

The ADP 9056 is shown above in the right frame. This kit is specifically designed to compliment the LDM 1100 diode mount described above. Each kit includes two optics

holders; one for use with Ø5.6mm diodes and a second holder for Ø9.0mm laser diodes. These black anodized, aluminum holders clamp the laser diode to the laser diode

mount/heat sink and provide the precision thread for mounting and adjusting the collimating lens. Three Optima collimating lens are supplied with each kit – the lens part

numbers are listed in the table below with a brief listing of the specifications – (the part numbers in the table are hypertext links to the detailed specifications page). These

high quality collimating lenses provide the user with a practical range of focal lengths for many experiments with laser diodes ranging from 635nm to 830nm.

The ADP 9056 KIT includes the lens housing for both Ø5.6mm and Ø9.0mm laser diodes, mounting hardware, and three collimating lenses; part numbers 336-1027-660 or

336-1027-785; 305-0065-780; and 305-8040-780. The lens specifications are briefly listed below:

P/N ADP 9056 KIT ... Unit price (Qty 1- 4) $130.00 each

ADP 9056 Optics Kit Lens Specifications:

Part Number Type Focal Length Numerical

Aperture Clear Aperture F# Field Diameter

336-1027-660 or

336-1027-785 ** Multi-element Glass 4.516 mm 0.48 4.30 mm 1.05 0.156 mm

305-0065-780 Molded Glass Asphere 5.25 mm 0.40 5.00 mm 1.25 0.100 mm

305-8040-780 8.00 mm 0.30 4.80 mm 1.67 0.100 mm

** The ADP 9056 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with 1300 nm and 1550 nm laser diodes, please contact the factory

for pricing and availability.

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Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

LDM 3300 KIT – Glass Asphere Lens with Large NA and Small Collimated Beam

The LDM 3300 KIT is the newest addition to Optima’s Laser Diode Mounting System. The compact cylindrical housing provides the essential heat sink for the laser diode

and a fine-pitch thread for adjusting the collimating lens position in the z-axis – allowing the user to either collimate or focus the laser diode beam.

The collimating lens used in the LDM 3300 kit is a diffraction limited, molded glass asphere with a large numerical aperture, Optima P/N 305-0464-780. With an NA of 0.5

the collimating lens will efficiently couple the output from most laser diodes. Also, this lens has a focal length that’s slightly shorter than most of the Optima glass lenses –

with a 4mm focal length, this lens creates a smaller collimated beam.

The minimum working distance is approximately 6 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 20 x 9.6 microns (1/e2, with 20 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.85 mm x 3.73 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3356 KIT.

P/N LDM 3300 KIT ... Unit price (Qty 1- 4) $54.60 each

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LDM 3400 KIT – Interchangeable Apertures to Circularize an Elliptical Beam

The LDM 3400 Laser Diode Mount is a unique design with a few features not found in the other Optima laser diode mounts. The 1/2-inch diameter cylindrical housing is

essentially split into two sections; the back section holds the laser diode and the collimating lens. The front section holds a changeable aperture and provides the adjustment

mechanism for positioning the collimating lens. The front section has a diamond knurl pattern on the outside diameter – to adjust the collimating lens position, just rotate the

front section and the collimating lens moves precisely in the z-axis. The laser diode is firmly held in place by a threaded ring that sits on the back surface of the diode –

increasing the metal-to-metal contact area and improving heat transfer.

Multi-element collimating lens – The lens included with the LDM 3400 mount is the Optima P/N 336-1027-660 or 336-1027-785*. This is possibly one of the best general

purpose collimating lens ever designed for visible and near-infrared diodes. When combined with the LDM 3400 mount, the assembly is simple and lens adjustment provides

exceptional control. Please refer to the lens specifications page for detailed information.

Interchangeable apertures – One technique used to “cleanup” or “circularize” a laser diodes elliptical beam is to pass the collimated beam through a small circular aperture.

If the size of the aperture is small enough, the beam exiting the aperture will be circular – an obvious problem with this technique is a loss in optical power. However, most

applications don’t require a perfectly circular beam – somewhere between the diodes elliptical beam and a circular beam, there’s usually an acceptable solution.

Comparison of LDM 3400 KIT using the 4.83mm (largest) aperture and the 1.14mm (smallest) aperture:

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

Figure 1

Focused beam 56.8 x 15.9 microns

Aspect ratio of ~3.5 to 1

Figure 2

Focused beam 66.0 x 51.6 microns

Aspect ratio of ~1.3 to 1

The two 3D figures shown above graphically illustrate the difference between an elliptical beam from a typical laser diode and a beam which has passed through a small

aperture – effectively circularizing the beam. The laser diode used in these examples is the Hitachi HL6312G. The beam shown in figure 1 was collimated using the LDM

3400 KIT with the 4.83mm aperture installed. (The 4.83mm aperture has no effect on the beam as it is larger than the clear aperture of the collimating lens). The beam in

figure 2 was collimated using the LDM 3400 KIT with the 1.14mm aperture installed. Both of the collimated beams were focused on the target sensor using a plano-convex

lens with a 60mm focal length. The size of the focused spot in figure 1 is 56.8 x 15.9 microns with an aspect ratio of about 3.5:1. The size of the focused spot in figure 2 is

66.0 x 51.6 microns with an aspect ratio of about 1.3:1. (The figures are taken at the 1/e2 point and are listed as the parallel axis x perpendicular axis).

Two additional points should be noted: When the beam is circularized with a small aperture, the focused spot will be larger than the focused spot which has not been clipped

by an aperture. And with the larger diameter focused beam, the depth of field will increase. For a smaller focused beam consider the LDM 4200 KIT listed below.

The LDM 3406 KIT and the LDM 3457 KIT includes 6 circular apertures in the following sizes – 1.14, 1.52, 2.03, 2.54, 3.05, and 4.83mm. The 4.83mm aperture is

larger than the clear aperture of the collimating lens, and consequently, has no clipping effect on the beam. The smallest aperture (1.14mm) is approximately equal to the

dimension of the collimated beam in the parallel axis (the minor axis of the elliptical beam). When the smallest aperture is imposed on the collimated beam, the output beam

will be very close to circular (this depends on the diodes parallel axis divergence angle). The loss in power, as compared with the 4.83mm aperture, is approximately 50%.

The larger diameter apertures may be used to cleanup a beam by removing side lobes and other artifacts without causing a significant loss in power. In any case, the range of

aperture sizes supplied with the LDM 3406 kit allows the user to evaluate the tradeoffs between beam size and power loss. The LDM 3406 KIT is for use with 9mm diameter

diodes; the LDM 3457 KIT is for use with 5.6mm diodes.

Ready for Production – The LDM 3400 KIT and the LDM 3456 KIT includes one aperture – once you have determined the optimum size for the aperture, the kit is available

in a lower cost production version with only one aperture. Special aperture sizes are available in production quantities; please contact the factory for a quote. The LDM 3400

KIT is for use with 9mm diameter diodes; the LDM 3456 KIT is for use with 5.6mm diodes.

P/N LDM 3400/3456 KIT ... Unit price (Qty 1- 4) $74.00 each (Kit includes the collimating lens)

P/N LDM 3406/3457 KIT ** ... Unit price (Qty 1- 4) $89.25 each (Kit includes the collimating lens and six apertures)

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

* The LDM 3400 or 3406 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with 1300 nm to 1550 nm laser diodes; please contact the

factory for pricing and availability.

** The LDM 3406 KIT has the same specifications as the LDM 3400 KIT and includes 6 apertures, the aperture sizes are listed in the product description above.

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LDM 3500 KIT – Smaller Beam for Long Distance Applications

The LDM 3500 KIT is similar to other laser diode mounts in the Optima product line – the housing provides a heat sink for the laser diode and a fine-pitch thread for adjusting

the collimating lens position in the z-axis – allowing the user to either collimate or focus the laser diode beam.

However, the collimating lens included in the LDM 3500 kit is a very high quality molded glass asphere with a long focal of 8mm, Optima P/N 305-8040-780. This lens

creates a very good quality beam in applications where a smaller beam is required at longer distances. It can be used in bar code readers that need a longer depth-of-field

and/or work at greater stand-off distances than the typical hand-held device. It’s probably most useful in alignment systems and laser levels that project a beam in excess of a

hundred feet.

The minimum working distance is approximately 90 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 50 x 23 microns (1/e2, with 50 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~1.68 mm x 5.30 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3556 KIT.

P/N LDM 3500 KIT ... Unit price (Qty 1- 4) $69.30 each

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LDM 3600 KIT – Provides X-Y Alignment for Accurate Beam Pointing

The compact cylindrical housing provides the essential heat sink for a Ø9mm laser diode and a precise three-axis adjustment system for positioning the collimating lens

relative to the laser diode. During assembly, the lens is aligned in the x-y axis with the laser diode emission point and adjusted in the z-axis to collimate or focus the beam.

The collimating lens included with this kit is a high quality, multi-element lens with a relatively large numerical aperture – Optima P/N 336-1027-660 for visible diodes, or

the 336-1027-785 for near-infrared diodes. Please refer to the lens specifications page for detailed information.

The minimum working distance is approximately 42 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 45 x 17 microns (1/e2, with 45 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.98 mm x 4.06 mm.

* The LDM 3600 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with 1300 nm to 1550 nm laser diodes; please contact the factory

for pricing and availability.

P/N LDM 3600 KIT ... Unit price (Qty 1- 4) $89.25 each (Kit includes the collimating lens)

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Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

LDM 3700 KIT and LDM 3800 KIT – Easy to Assemble without X-Y Alignment

Similar to the LDM 3600 except the lens is adjustable only in the z-axis, controlling the focus or collimation of the beam; there is no provision for moving the lens in the x-y

axis. The collimating lens and laser diode are positioned to within 13 microns of the housing mechanical center line; however, due to misplacement of the laser die inside the

laser diode package, the optical beam may not be coincident with the housing mechanical axis — typically, the worse case pointing error is less than 17.5 mrad.

The difference between the LDM 3700 KIT and LDM 3800 KIT is as follows: the mechanical details of the lens holder are slightly different and the LDM 3700 housing is

17mm in length, whereas the LDM 3800 housing is 18mm long. The same collimating lens is included with either mounting kit; it’s a high quality, multi-element lens with a

relatively large numerical aperture – Optima P/N 336-1027-660* for visible diodes, or the 336-1027-785* for near-infrared diodes. Please refer to the lens specifications page

for detailed information.

The minimum working distance is approximately 16 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 27 x 21 microns (1/e2, with 27 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.98 mm x 4.06 mm.

When ordering a mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3756 KIT or LDM 3856 KIT.

Also, please specify which AR coating is required, -660 for visible diodes; or -785 for near-IR diodes.

* The LDM 3700 or 3800 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with 1300 nm to 1550 nm laser diodes; please contact the

factory for pricing and availability.

P/N LDM 3700 KIT ... Unit price (Qty 1- 4) $67.20 each (Kit includes the collimating lens)

P/N LDM 3800 KIT ... Unit price (Qty 1- 4) $67.20 each (Kit includes the collimating lens)

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LDM 3900 KIT – Molded Glass Aspheric Lens without X-Y alignment

Similar to the LDM 3700 except the collimating lens provided is a molded glass asphere – Optima P/N 305-0065-780. This kit provides an excellent compromise between

cost and performance — something in between an assembly using the higher cost multi-element lens and a kit with a lower cost plastic lens. The optical performance of the

lens is very good — it creates a collimated beam which is slightly larger than a beam from the 336-1027 lens, resulting in a beam with less divergence and, consequently, a

smaller beam at greater distances. Conversely, due to the longer focal length and larger clear aperture, this lens creates a smaller focused beam. Please refer to the lens

specifications page for detailed information.

The minimum working distance is approximately 21 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 24 x 10.5 microns (1/e2, with 24 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~1.37 mm x 5.12 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3956 KIT.

P/N LDM 3900 KIT ... Unit price (Qty 1- 4) $54.60 each (Kit includes the collimating lens)

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Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

LDM 4000 KIT – Low Cost Plastic Bi-Aspheric Lens without X-Y Alignment

This low cost mounting kit is similar to the LDM 3900 except the collimating lens provided is an molded plastic asphere – Optima P/N 300-0360-780. Please refer to the lens

specifications page for detailed information

The minimum working distance is approximately 8 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode, a beam focused at the minimum

working distance is approximately 19.5 x 8.6 microns(1/e2, with 19.5 microns being the parallel axis); a collimated beam 100 mm from the front surface of the housing is

~0.92 mm x 3.17 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 4056 KIT.

P/N LDM 4000 KIT ... Unit price (Qty 1- 4) $43.70 each (Kit includes the collimating lens)

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LDM 4100 KIT – Molded Glass Aspheric Lens with provision for X-Y alignment

The compact cylindrical housing provides the heat sink for the laser diode and a precise three-axis adjustment system for positioning the collimating lens relative to the laser

diode. During assembly, the lens is aligned in the x-y axis with the laser diode emission point and adjusted in the z-axis to collimate or focus the beam. The collimating lens

included with this kit is the Optima P/N 310-0065-780, (this lens has the same spec’s as the 305-0065-780, except the 310- version is in a special mount intended for this

diode mounting kit). While the collimating lens is AR coated for 780nm, the lens works very well with both visible and near-infrared diodes. Please refer to the lens

specifications page for detailed information.

The minimum working distance is approximately 45 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 45 x 18.5 microns (1/e2, with 45 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~1.37 mm x 5.12 mm.

The LDM 4100 KIT is only available for Ø9.0mm diodes.

P/N LDM 4100 KIT ... Unit price (Qty 1- 4) $77.20 each (Kit includes the collimating lens)

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LDM 4200 KIT – Bi-aspheric Plastic Lens for Long Distance Applications

This laser diode mounting kit is specifically designed to accept the Optima 300-0395-780 plastic aspheric collimating lens. Due to the relatively long focal length of the

collimating lens, the housing is longer than most of the Optima laser diode mounts. With a long focal length (16mm) and small numerical aperture (NA=.14) this lens creates

a relatively large diameter beam that’s more circular than the output from a typical laser diode collimating lens. Also, the 300-0395-780 lens is a very high-quality injection

molded plastic lens – this lens has been used in digital laser communication systems which are extremely sensitive to lens aberrations and diffraction patterns that can be

misread as data when a beam sweeps across a detector. The only negative aspect of the lens might be the small NA – the coupling efficiency (or total transmission) for most

visible laser diodes is just under 50%. Please refer to the lens specifications page for detailed information.

Comparison of LDM 4200 KIT and the LDM 3700 KIT:

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

Figure 1 — LDM 4200 KIT

Focused beam 19.9 x 13.1 microns

Aspect ratio of ~1.5 to 1

Figure 2 — LDM 3700 KIT

Focused beam 54.8 x 15.2 microns

Aspect ratio of ~3.6 to 1

The two 3D figures shown above graphically illustrate the difference between a nearly circular beam from the LDM 4200 KIT and the typical elliptical beam, in this case from

the LDM 3700 KIT. The laser diode used in these examples is the Hitachi HL6312G. The beam shown in figure 1 was collimated using the LDM 4200 KIT and the beam in

figure 2 was collimated using the LDM 3700 KIT which is typical of all Optima LDM kits using the 336-1027-xxx collimating lens. Both of the collimated beams were

focused on the target sensor using a plano-convex lens with a 60mm focal length. The size of the focused spot in figure 1 is 19.9 x 13.1 microns with an aspect ratio of about

1.5:1. The size of the focused spot in figure 2 is 54.8 x 15.2 microns with an aspect ratio of about 3.6:1. (The figures are taken at the 1/e2 point and are listed as the parallel

axis x perpendicular axis).

Due to the long focal length, the minimum working distance is approximately 153 mm (6 inches) from the front surface of the LDM housing. If the application requires

focusing at shorter distances, it would be best to collimate the output from the diode and then use a simple lens like a plano-convex to focus the beam. However, for reference

we have measured the beam from the LDM 4200 kit using a Hitachi HL6312G laser diode; a beam focused at the minimum working distance is approximately 51.0 x 36.1

microns (1/e2, with 51.0 microns being the parallel axis); a collimated beam 100 mm from the front surface of the housing is ~3.38 mm x 4.65 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 4256 KIT.

P/N LDM 4200 KIT ... Unit price (Qty 1- 4) $50.40 each (Kit includes the collimating lens)

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LDM 4500 KIT – Low Cost Plastic Bi-Aspheric Lens, Small Collimated Beam

Similar to the LDM 4000 except the collimating lens provided is a molded plastic asphere, P/N 300-0380-780. With a short focal length of 3.4mm, this lens provides at

relatively small collimated beam. A large numerical aperture (NA) of 0.47 provides excellent coupling efficiency with most laser diodes. Please refer to the lens specifications

page for detailed information.

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

The minimum working distance is approximately 4 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser diode as an example, a beam focused at

the minimum working distance is approximately 26.5 x 7.3 microns (1/e2, with 26.5 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.74 mm x 2.89 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 4556 KIT.

P/N LDM 4500 KIT ... Unit price (Qty 1- 4) $43.70 each (Kit includes the collimating lens)

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LDM 5000 KIT – Low Wavefront Aberration, Larger Collimated Beam

Unique housing design – This housing has a flat mounting surface perpendicular to the optical axis, ideal for attachment to a printed circuit board or thermal electric cooler.

Four #2-56 threaded holes in the base facilitate mounting, alignment, and aiming – if the base is attached to a “soft” mount like a rubber o-ring or wave washer, the beam can

be “pointed” by selectively adjusting the four mounting screws attached to the base.

X-Y alignment – The laser emission point may be aligned with the lens optical axis by translating the diode in the x-y axis. While the lens is free to move in the z-axis

(controlling focus or collimation) the lens does not rotate, minimizing lateral shift in the focused beam during the lens adjustment process. The collimating lens provided is a

very high quality, diffraction-limited, multi-element lens with a large clear aperture and medium NA, Optima P/N 336-0965-780. With the larger clear aperture and excellent

wavefront quality, this lens is intended for more demanding applications; such as laser diode instrumentation and/or long distance measurement applications. Please refer to

the lens specifications page for detailed information.

Broad range of lens adjustment – The minimum working distance is approximately 12 mm from the front surface of the LDM housing. Using a Hitachi HL6312G laser

diode as an example, a beam focused at the minimum working distance is approximately 30 x 15.5 microns (1/e2, with 30 microns being the parallel axis); a collimated beam

100 mm from the front surface of the housing is ~1.52 mm x 5.71 mm.

The LDM 5000 KIT is available in limited quantities and only for Ø9.0mm diodes.

P/N LDM 5000 KIT ... Unit price (Qty 1- 4) $278.00 each (Kit includes the collimating lens)

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Last modified: December 30, 2000

Laser Diode Mounting Kits, Heatsink and Collimating Lens Holder - Optima

Laser Diode Mounting Kits

PART NUMBER FEATURES AND

ATTRIBUTES X-Y

ADJUST COLLIMATING

LENS TYPE COLLIMATING

LENS P/N

LASER DIODE

BASE

DIMENSION

HOUSING

DIMENSIONS PRICE

LDM 1100 KIT

Optical bench

mount, no optics no Optics not included,

use ADP 9056 KIT listed below Ø5.6 & Ø9.0 mm Ø25.3 x 10.4mm

$50.40

ADP 9056 KIT

(1,4)

Optics kit for

LDM 1100 KIT no Lenses noted below (4),

no laser diode mount included

use LDM 1100 KIT listed above Ø5.6 & Ø9.0 mm Ø25.3 x 14.9mm

130.00

LDM 3300 KIT

(3)

Small collimated

beam no Glass Asphere 305-0464-780 Ø5.6 & Ø9.0 mm Ø11 x 17mm

54.60

LDM 3400 KIT

(1,2,3)

Aperture for beam

shaping no Multi-element 336-1027-xxx Ø5.6 & Ø9.0 mm Ø12.7 x 18.5mm

74.00

LDM 3406 KIT

(1,2,3)

Interchangeable

apertures for beam

shaping no Multi-element 336-1027-xxx Ø5.6 & Ø9.0 mm Ø12.7 x 18.5mm

89.25

LDM 3500 KIT

(3)

Long FL lens for

small beam at long

distance no Glass Asphere 305-8040-780 Ø5.6 & Ø9.0 mm Ø11 x 18mm

69.30

LDM 3600 KIT

(1)

Best beam quality yes Multi-element 336-1027-xxx Ø9.0 mm Ø11 x 20.6mm

89.25

LDM 3700 KIT

(1,3)

Best beam quality no Multi-element 336-1027-xxx Ø5.6 & Ø9.0 mm Ø11 x 17mm

67.20

LDM 3800 KIT

(1,3)

Best beam quality no Multi-element 336-1027-xxx Ø5.6 & Ø9.0 mm Ø11 x 18mm

67.20

LDM 3900 KIT

(3)

Good beam quality,

smaller focused

beam no Glass Asphere 305-0065-780 Ø5.6 & Ø9.0 mm Ø11 x 17mm

54.60

LDM 4000 KIT

(3)

Lowest cost no Plastic Asphere 300-0360-780 Ø5.6 & Ø9.0 mm Ø11 x 17mm

43.70

LDM 4100 KIT

same as LDM 3900 yes Glass Asphere 305-0065-780 Ø9.0 mm Ø11.87 x 20.6mm

77.20

LDM 4200 KIT

(3)

Low cost, long FL

lens for smallest

beam at long

distance

no Plastic Asphere 300-0395-780 Ø5.6 & Ø9.0 mm Ø11 x 25.5mm

50.40

LDM 4500 KIT

(3)

Low cost, small

collimated beam no Plastic Asphere 305-0380-780 Ø5.6 & Ø9.0 mm Ø11 x 17mm

43.70

LDM 5000 KIT

Excellent beam

quality, large dia

collimated beam yes Multi-element 336-0965-780 Ø9.0 mm Ø25.4 x 27mm

278.00

If your work involves laser diodes, you’ll appreciate the benefits of Optima’s laser diode mounting systems.

Components in the system facilitate mounting a laser diode, collimating or focusing the beam, and aligning the beam

with other optics or electro-optical components. Optima’s laser diode mounting kits offer a quick and cost effective

solution for mounting a Ø5.6mm or Ø9mm laser diode. All of the mounting kits (except the LDM 1100) include the

collimating lens, a black anodized aluminum housing, and the hardware required to mount your laser (the laser diode

is not included). All of the collimating lenses are intended for use with laser diodes in the 635nm to 830nm range.

Model Comparison and Specifications:

Notes: 1)Please specify collimating lens 336-1027-660 (for visible diodes) or 336-1027-785 (for near-infrared diodes).

2) The LDM 3400 KIT includes one aperture; the LDM 3406 includes 6 interchangeable apertures.

3) These kits are also available for Ø5.6mm laser diodes  the P/N changes to LDM 3356, 3456, 3556, 3756, 3856, 3956, 4056 ,4256, and 4556.

4) The ADP 9056 KIT must be used with the LDM 1100 KIT. The ADP 9056 KIT includes the lens housing for both Ø5.6mm and Ø9.0mm

laser diodes, mounting hardware, and three collimating lenses: 336-1027-660 or 336-1027-785; 305-0065-780; and 305-8040-780.

For 5.6mm and 9mm Laser Diodes — Complete Mounting System with Collimating Lens

REV 01JAN01

Laser Diode Mounting Kits  Detailed Description and Specifications:

LDM 1100 KIT  Laser Diode Mount for 5.6mm and 9.0mm Diodes

The LDM 1100 Laser Diode Mount is shown below in the left frame. This convenient mount facilitates mounting the

popular Ø5.6mm and Ø9.0mm laser diodes on a standard optical bench post with a #8-32 thread (the post is not

included in the kit).

Often when we’re working in the lab with various laser diodes and evaluating different optical assemblies, we find it

very desirable to have the diode mounted in a heat sink/mount that provides direct access to the front of the diode.

With unobstructed access to the diode’s output, it’s possible to position lenses or other optical components using a

separate component holder and/or translation stage. Using the LDM 1100, the diode’s base is firmly clamped against

the heat sink surface and the diode’s pins are accessible from the back side of the mount. A clearance hole on the

back side of the mount permits using our laser diode socket (P/N 900-8060-000) which greatly improves reliability in

connecting the diode with a drive cable.

Note: The LDM 1100 KIT includes the heat sink/mount and mounting hardware for both 5.6mm and 9.0mm

laser diodes. There are no optics included in the LDM 1100 KIT — the ADP 9056 Optics Kit shown below in the

right frame is designed to be used with the LDM 1100 — the ADP 9056 is described in the next section and

should be ordered with the LDM 1100 KIT.

LDM 1100 KIT Laser Diode Mount Cross-section of the ADP 9056 KIT Optics Kit shown

attached to the LDM 1100 Laser Diode Mount

ADP 9056 KIT  Optics Kit for LDM 1100 KIT

The ADP 9056 is shown above in the right frame. This kit is specifically designed to compliment the LDM 1100 diode

mount described above. Each kit includes two optics holders; one for use with Ø5.6mm diodes and a second holder

for Ø9.0mm laser diodes. These black anodized, aluminum holders clamp the laser diode to the laser diode

mount/heat sink and provide the precision thread for mounting and adjusting the collimating lens. Three Optima

collimating lens are supplied with each kit – the lens part numbers are listed in the table below with a brief listing of the

specifications. These high quality collimating lenses provide the user with a practical range of focal lengths for many

experiments with laser diodes ranging from 635nm to 830nm.

The ADP 9056 KIT includes the lens housing for both Ø5.6mm and Ø9.0mm laser diodes, mounting hardware, and

three collimating lenses; part numbers 336-1027-660 or -785; 305-0065-780; and 305-8040-780. The lens

specifications are briefly listed below:

PART NUMBER LENS TYPE FOCAL

LENGTH NUMERICAL

APERTURE CLEAR

APERTURE FIELD

DIAMETER F# CONJUGATE

DISTANCE

336-1027-xxx **

Multi-element 4.516mm 0.476 4.30mm 0.156mm 1.05

Infinite

305-0065-780

Molded

Asphere

5.25mm 0.4 5.00mm 0.100mm 1.25

305-8040-780

8.00mm 0.3 4.80mm 0.100mm 1.67

** The ADP 9056 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with

1300 nm and 1550 nm laser diodes; please contact the factory for pricing and availability.

LDM 1100 KIT

ADP 9056 KIT

#8-32 THD.

25.3mm

17.9mm

ADP 9056 KIT Optics Kit shown attached to the

LDM 1100 Laser Diode Mount

REV 01JAN01

Laser Diode Mounting Kits  Detailed Description and Specifications:

LDM 3300 KIT  Glass Asphere Lens with Large NA and Small Collimated Beam

The LDM 3400 Laser Diode Mount is a unique design with a few features not found in the other Optima laser diode

mounts. The 1/2-inch diameter cylindrical housing is essentially split into two sections; the back section holds the laser

diode and the collimating lens. The front section holds a changeable aperture and provides the adjustment

mechanism for positioning the collimating lens. The front section has a diamond knurl pattern on the outside diameter

– to adjust the collimating lens position, just rotate the front section and the collimating lens moves precisely in the

z-axis. The laser diode is firmly held in place by a threaded ring that sits on the back surface of the diode – increasing

the metal-to-metal contact area and improving heat transfer.

Multi-element collimating lens – The lens included with the LDM 3400 mount is the Optima P/N 336-1027-660 or

336-1027-785*. This is possibly one of the best general purpose collimating lens ever designed for visible and

near-infrared diodes. When combined with the LDM 3400 mount, the assembly is simple and lens adjustment provides

exceptional control.

Interchangeable apertures – One technique used to “cleanup” or “circularize” a laser diodes elliptical beam is to

pass the collimated beam through a small circular aperture. If the size of the aperture is small enough, the beam

exiting the aperture will be circular – an obvious problem with this technique is a loss in optical power. However, most

applications don’t require a perfectly circular beam – somewhere between the diodes elliptical beam and a circular

beam, there’s usually an acceptable solution.

The LDM 3406 KIT includes 6 circular apertures in the following sizes – 1.14, 1.52, 2.03, 2.54, 3.05, and 4.83mm.

The 4.83mm aperture is larger than the clear aperture of the collimating lens, and consequently, has no clipping effect

on the beam. The smallest aperture (1.14mm) is approximately equal to the dimension of the collimated beam in the

parallel axis (the minor axis of the elliptical beam). When the smallest aperture is imposed on the collimated beam, the

output beam will be very close to circular (this depends on the diodes parallel axis divergence angle). The loss in

power, as compared with the 4.83mm aperture, is approximately 50%. The larger diameter apertures may be used to

cleanup a beam by removing side lobes and other artifacts without causing a significant loss in power. In any case, the

range of aperture sizes supplied with the LDM 3406 kit allows the user to evaluate the tradeoffs between beam size

and power loss.

Ready for Production – The LDM 3400 KIT includes one aperture – once you’ve determined the optimum size for the

aperture, the kit is available in a lower cost production version with only one aperture. Special aperture sizes are

available in production quantities; please contact the factory for a quote.

When ordering this mounting kit for use with Ø5.6mm diodes; the part number changes to LDM 3456 KIT or

LDM 3457 KIT. The LDM 3456 KIT has one aperture; LDM 3457 KIT includes 6 apertures.

* The LDM 3400 Series kits may be special ordered with the 336-1027-140 lens which is AR coated for use with 1300

nm to 1550 nm laser diodes; please contact the factory for pricing and availability.

LDM 3400 KIT  Interchangeable Apertures to Circularize an Elliptical Beam

The LDM 3300 KIT is the newest addition to Optima’s Laser Diode Mounting System. The compact cylindrical housing

provides the essential heat sink for the laser diode and a fine-pitch thread for adjusting the collimating lens position in

the z-axis – allowing the user to either collimate or focus the laser diode beam.

The collimating lens used in the LDM 3300 kit is a diffraction limited, molded glass asphere with a large numerical

aperture, Optima P/N 305-0464-780. With an NA of 0.5 the collimating lens will efficiently couple the output from most

laser diodes. Also, this lens has a focal length that’s slightly shorter than most of the Optima glass lenses – with a 4mm

focal length, this lens creates a smaller collimated beam.

The minimum working distance is approximately 6 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 20 x 9.6

microns (1/e

, with 20 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.85 mm x 3.73 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3356 KIT.

REV 01JAN01

Laser Diode Mounting Kits  Detailed Description and Specifications:

Similar to the LDM 3600 except the lens is adjustable only in the z-axis, controlling the focus or collimation of the

beam; there is no provision for moving the lens in the x-y axis. The collimating lens and laser diode are positioned to

within 13 microns of the housing mechanical center line; however, due to misplacement of the laser die inside the laser

diode package, the optical beam may not be coincident with the housing mechanical axis — typically, the worse case

pointing error is less than 17.5 mrad.

The difference between the LDM 3700 KIT and LDM 3800 KIT is as follows: the mechanical details of the lens holder

are slightly different and the LDM 3700 housing is 17mm in length, whereas the LDM 3800 housing is 18mm long. 

The same collimating lens is included with either mounting kit; it’s a high quality, multi-element lens with a relatively

large numerical aperture – Optima P/N 336-1027-660 for visible diodes, or the 336-1027-785 for near-infrared diodes.*

The minimum working distance is approximately 16 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 27 x 21

microns (1/e

, with 27 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.98 mm x 4.06 mm.

When ordering a mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3756 KIT or

LDM 3856 KIT. Also, please specify which AR coating is required, -660 for visible diodes; or -785 for near-IR diodes.*

* The LDM 3700 or 3800 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with

1300 nm to 1550 nm laser diodes; please contact the factory for pricing and availability.

LDM 3700 KIT and LDM 3800 KIT  Easy to Assemble without X-Y Alignment

The LDM 3500 KIT is similar to other laser diode mounts in the Optima product line – the housing provides a heat sink

for the laser diode and a fine-pitch thread for adjusting the collimating lens position in the z-axis – allowing the user to

either collimate or focus the laser diode beam.

However, the collimating lens included in the LDM 3500 kit is a very high quality molded glass asphere with a long

focal of 8mm, Optima P/N 305-8040-780. This lens creates a very good quality beam in applications where a smaller

beam is required at longer distances. It can be used in bar code readers that need a longer depth-of-field and/or work

at greater stand-off distances than the typical hand-held device. It’s probably most useful in alignment systems and

laser levels that project a beam in excess of a hundred feet.

The minimum working distance is approximately 90 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 50 x 23

microns (1/e

, with 50 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~1.68 mm x 5.30 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3556 KIT.

LDM 3500 KIT  Smaller Beam for Long Distance Applications

The compact cylindrical housing provides the essential heat sink for a Ø9mm laser diode and a precise three-axis

adjustment system for positioning the collimating lens relative to the laser diode. During assembly, the lens is aligned

in the x-y axis with the laser diode emission point and adjusted in the z-axis to collimate or focus the beam.

The collimating lens included with this kit is a high quality, multi-element lens with a relatively large numerical

aperture – Optima P/N 336-1027-660 for visible diodes, or the 336-1027-785 for near-infrared diodes.

The minimum working distance is approximately 42 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 45 x 17

microns (1/e

, with 45 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.98 mm x 4.06 mm.

* The LDM 3600 KIT may also be special ordered with the 336-1027-140 lens which is AR coated for use with 1300 nm

to 1550 nm laser diodes; please contact the factory for pricing and availability.

LDM 3600 KIT  Provides X-Y Alignment for Accurate Beam Pointing

REV 01JAN01

Similar to the LDM 3700 except the collimating lens provided is a molded glass asphere – Optima P/N 305-0065-780.

This kit provides an excellent compromise between cost and performance — something in between an assembly

using the higher cost multi-element lens and a kit with a lower cost plastic lens. The optical performance of the lens is

very good — it creates a collimated beam which is slightly larger than a beam from the 336-1027 lens, resulting in a

beam with less divergence and, consequently, a smaller beam at greater distances. Conversely, due to the longer focal

length and larger clear aperture, this lens creates a smaller focused beam.

The minimum working distance is approximately 21 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 24 x 10.5

microns (1/e

, with 24 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~1.37 mm x 5.12 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 3956 KIT.

Laser Diode Mounting Kits  Detailed Description and Specifications:

LDM 3900 KIT  Molded Glass Aspheric Lens without X-Y alignment

This low cost mounting kit is similar to the LDM 3900 except the collimating lens provided is an molded plastic asphere

– Optima P/N 300-0360-780.

The minimum working distance is approximately 8 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode, a beam focused at the minimum working distance is approximately 19.5 x 8.6 microns

(1/e2, with 19.5 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.92 mm x 3.17 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 4056 KIT.

LDM 4000 KIT  Low Cost Plastic Bi-Aspheric Lens without X-Y Alignment

The compact cylindrical housing provides the heat sink for the laser diode and a precise three-axis adjustment system

for positioning the collimating lens relative to the laser diode. During assembly, the lens is aligned in the x-y axis with

the laser diode emission point and adjusted in the z-axis to collimate or focus the beam. The collimating lens included

with this kit is the Optima P/N 310-0065-780, (this lens has the same spec’s as the 305-0065-780, except the 310-

version is in a special mount intended for this diode mounting kit). While the collimating lens is AR coated for 780nm,

the lens works very well with both visible and near-infrared diodes.

The minimum working distance is approximately 45 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 45 x 18.5

microns (1/e2, with 45 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~1.37 mm x 5.12 mm.

The LDM 4100 KIT is only available for Ø9.0mm diodes.

LDM 4100 KIT  Molded Glass Aspheric Lens with provision for X-Y alignment

REV 01JAN01

LDM 5000 KIT  Low Wavefront Aberration, Larger Collimated Beam

Laser Diode Mounting Kits  Detailed Description and Specifications:

This laser diode mounting kit is specifically designed to accept the Optima 300-0395-780 plastic aspheric collimating

lens. Due to the relatively long focal length of the collimating lens, the housing is longer than most of the Optima laser

diode mounts. With a long focal length (16mm) and small numerical aperture (NA=.14) this lens creates a relatively

large diameter beam that’s more circular than the output from a typical laser diode collimating lens. Also, the

300-0395-780 lens is a very high-quality injection molded plastic lens – this lens has been used in digital laser

communication systems which are extremely sensitive to lens aberrations and diffraction patterns that can be misread

as data when a beam sweeps across a detector. The only negative aspect of the lens might be the small NA – the

coupling efficiency (or total transmission) for most visible laser diodes is just under 50%.

Due to the long focal length, the minimum working distance is approximately 153 mm (6 inches) from the front surface

of the LDM housing. If the application requires focusing at shorter distances, it would be best to collimate the output

from the diode and then use a simple lens like a plano-convex to focus the beam. However, for reference we have

measured the beam from the LDM 4200 kit using a Hitachi HL6312G laser diode; a beam focused at the minimum

working distance is approximately 51.0 x 36.1 microns (1/e2, with 51.0 microns being the parallel axis); a collimated

beam 100 mm from the front surface of the housing is ~3.38 mm x 4.65 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 4256 KIT.

LDM 4200 KIT  Bi-aspheric Plastic Lens for Long Distance Applications

Similar to the LDM 4000 except the collimating lens provided is a molded plastic asphere, P/N 300-0380-780. With a

short focal length of 3.4mm, this lens provides at relatively small collimated beam. A large numerical aperture (NA) of

0.47 provides excellent coupling efficiency with most laser diodes.

The minimum working distance is approximately 4 mm from the front surface of the LDM housing. Using a Hitachi

HL6312G laser diode as an example, a beam focused at the minimum working distance is approximately 26.5 x 7.3

microns (1/e2, with 26.5 microns being the parallel axis); a collimated beam 100 mm from the front surface of the

housing is ~0.74 mm x 2.89 mm.

When ordering this mounting kit for use with Ø5.6mm diodes, the part number changes to LDM 4556 KIT.

LDM 4500 KIT  Low Cost Plastic Bi-Aspheric Lens, Small Collimated Beam

Unique housing design – This housing has a flat mounting surface perpendicular to the optical axis, ideal for

attachment to a printed circuit board or thermal electric cooler. Four #2-56 threaded holes in the base facilitate

mounting, alignment, and aiming – if the base is attached to a “soft” mount like a rubber o-ring or wave washer, the

beam can be “pointed” by selectively adjusting the four mounting screws attached to the base.

X-Y alignment – The laser emission point may be aligned with the lens optical axis by translating the diode in the x-y

axis. While the lens is free to move in the z axis (controlling focus or collimation) the lens does not rotate, minimizing

lateral shift in the focused beam during the lens adjustment process. The collimating lens provided is a very high

quality, diffraction-limited, multi-element lens with a large clear aperture and medium NA, Optima P/N 336-0965-780.

With the larger clear aperture and excellent wavefront quality, this lens is intended for more demanding applications;

such as laser diode instrumentation and/or long distance measurement applications.

LDM 5000 KIT

26.9mm Ø25.4mm

Broad range of lens adjustment – The minimum

working distance is approximately 12 mm from the front

surface of the LDM housing. Using a Hitachi HL6312G

laser diode as an example, a beam focused at the

minimum working distance is approximately 30 x 15.5

microns (1/e2, with 30 microns being the parallel axis);

a collimated beam 100 mm from the front surface of

the housing is ~1.52 mm x 5.71 mm.

The LDM 5000 KIT is available in limited quantities and

only for Ø9.0mm diodes.

REV 01JAN01

Tools and Accessories

Laser Diode Socket – If you're looking for a reliable socket for a laser diode, this is undoubtedly the best socket

available. The contacts are gold-plated beryllium copper and the body is injection molded Teflon. There are 3 contacts

located on a 0.100" diameter circle which exactly matches the pin layout for the standard Ø9mm laser diode -- the sockets

may also be used with the Ø5.6mm laser diodes by slightly bending the laser diode's leads. On the wire side of the socket,

there are solder pots which accept up to 24 gauge wire. The physical size is Ø6.3mm x 10.3mm in length (Ø.248" x

.405").

Part number Description Price each

900-8060-000 Laser Diode Socket, for three pin laser

diodes $ 9.90

Lens Adjustment Tool – A miniature spanner wrench for adjusting the collimating lens in most Optima laser diode

assemblies. The plastic ring has two steel pins which engage the lens holder allowing precise rotation and control of the

lens assembly. The aperture through the tool is large enough to clear most collimated beams. (This tool isn't absolutely

necessary to adjust the lens – almost any small pointed object will work – however, the tool provides better control over a

very sensitive adjustment).

Part number Description Price each

900-3638-000 Focus Adjustment Tool, fits all lens holders

except as mentioned below $ 12.10

900-5038-000 Focus Adjustment Tool, for LDM 5000

KIT $ 18.40

Retaining Ring Pliers – When the Optima Laser Diode Mounting kits are used in production applications, we

recommend using a pair of high quality retaining ring pliers. This is a case where using the correct tool will really help

make the assembly process easier. The pliers are forged-steel with cushioned hand grips and the tips are conveniently

angled at 90 degrees for installing internal rings.

Part number Description Price each

900-3590-000 Retaining Ring Pliers, for 5/16" to 5/8"

diameter rings $ 24.00

Precision Thread Tap – The thread used on many of the Optima lens holders is a .375-64 (3/8 inch diameter, 65 threads

per inch). The fine pitch provides precise control for adjusting collimation or focus. While this thread is special, there are

taps and dies available from many machine tool suppliers in the U.S. (however, you may not find it at your local

hardware store). For your convenience, we stock the .375-64 tap (used for cutting internal threads).

Part number Description Price each

900-3864-000 Precision Thread Tap, .375-64 $ 13.20

Tools and Accessories -- Optima Precision Inc.

Miniature Hex Driver – The Optima Laser Diode Mounting kits that have an x-y adjustment are supplied with the

appropriate hex key however, this miniature precision driver is recommended for adjusting the small #0-80 set screws in

production applications.

Part number Description Price each

900-7270-080 Miniature Hex Driver for #0-80 set screws

used on the LDM 3600 KIT, LDM 4100

KIT $ 8.90

Heat Sink Compound – To improve the heat transfer between a laser diode and the mounting surface or housing, we

recommend using a small amount of non-silicone heat sink compound. This material is formulated to eliminate the

phenomenon of silicone migration and out-gassing. The material will not harden, dry out or melt. It also meets the

physical properties of MIL-C-47113.

Part number Description Price each

900-3626-000 Heat Sink Compound, Tube 4 oz. $ 21.20

Duco® Cement* – A long time favorite for use with optics. The adhesive bonds or tacks glass to metal, it dries quickly

and can be removed or softened with acetone.

Part number Description Price each

900-4740-000 Adhesive, Tube 1 oz. $ 3.15

* Duco is a registered trademark of Devcon Corporation

Optical Bench Adapters – These four adapters are specifically designed to hold Optima's Diode Laser Modules,

Collimated Diode Lasers, and Laser Diode Mounts. Machined from aluminum and finished with a black anodize, the

adapters attach to a standard optical bench post with an #8-32 thread (the post is not included). The laser diode assembly

is firmly retained in the adapter by a nylon-tipped set screw – a close fit between the laser diode assembly and the adapter

facilitates heat transfer.

Part number Description Price each

ADP

1125-000

Holds an 11mm diameter Collimated Diode Laser

(CDL) or the Ø11mm Laser Diode Mounting Kit

(LDM) on a standard optical bench post using the

#8-32 thread.

$ 14.70

ADP

1525-000

Holds a 15m diameter Diode Laser Module (DLM)

or Line Generator Module on a standard optical

bench post using the #8-32 thread. Two holders may

be used in an environment where vibration may be a

problem.

$ 14.70

ADP

1115-000

Holds an 11mm diameter Collimated Diode Laser

(CDL) or the Ø11mm Laser Diode Mounting Kit

(LDM) in the two-axis positioner (P/N 250-0015) or

the four-axis positioner (P/N 260-0015)

$ 13.20

Tools and Accessories -- Optima Precision Inc.

ADP

1538-000

Lens holder for use with two-axis and four-axis

positioners, this adapter has an internal 3/8-64 which

fits many of the Optima mounted lenses i.e.

302-0355-780, 302-0360-780, 306-0065-780,

306-8040-780, and 306-1027-xxx

$ 11.00

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: March 13, 2001

Tools and Accessories -- Optima Precision Inc.

2-Axis and 4-Axis Precision Positioners

Precision XY Translator & XY Translator plus Tilt Control (shown above)

These unique XY Translators help reduce the tedious process of accurately positioning optics and optoelectronic

components. Compared with a conventional translation stage, these units offer several advantages. In a very compact and

economical package, the XY Translators provide smooth, precision movement in two axes.

Ideally suited for OEM or prototype use in optical instruments, the XY Translators facilitate the accurate positioning of

light sources, optics, fibers, and detectors or sensors for maximum performance. While the positioners were designed for

an optical instrument, we've found them indispensable in our optical bench set-ups where small optics and other critical

devices must be carefully aligned. The small footprint of the XY Translators and their compatibility with standard optical

bench post holders, allows the use of multiple units in the space typically required by one translation stage.

Precise x-y motion is controlled by moving a pair of levers on the side of the unit. One lever moves the optical component

in the X direction while the second lever controls the Y axis movement. A positive locking mechanism ensures the mount

will be permanently locked in place once the desired position is established.

Components are retained in the mount with a nylon-tipped set screw which gently, but positively, holds the component

against two contact points, ensuring a stable three-point mounting system. Part number 250-0015 will accept components

up to 15mm in diameter, while P/N 250-0025 accepts components up to 25.4mm in diameter. Additional hardware may

be attached to the front surface of the mount by using the four #4-40 threaded holes. Two #8-32 threaded holes on the

bottom edge of the mount are compatible with most standard optical bench posts.

2-Axis and 4-Axis Precision Positioners - Optima Precision Inc.

XY Translator plus Tilt Adjustment

Precision control of angular adjustment is available in the four axis positioners. With the same basic operation as the XY

Translators described above, the four axis unit provides the added capability of tilt control. Kinematic angular adjustment

is achieved by using a pair of 1/4-80 adjustment screws while a pair of levers independently control the x-y movement.

The kinematic adjustment screws may be ordered with either screwdriver adjustment slots or with rubber covered knobs

for convenient tool-free adjustment.

Part Numbers and Specifications:

Description X-Y Translator

Part Number 250-0015-000 250-0025-000

Unit Price $183.75 $183.75

Aperture Size (maximum

component diameter) 15 mm (0.590 in.) 25.4 mm (1 in.)

Linear Range of Motion ± 2 mm (0.080 in.)

Linear Adjustment

Sensitivity < 0.1 mm (0.004 in.)

Material and Finish Aluminum, anodized black

Mechanical Dimensions:

2-Axis and 4-Axis Precision Positioners - Optima Precision Inc.

Description X-Y Translator plus Tilt Adjustment

Part Number 260-0015-000

Unit Price $252.00

Aperture Size (maximum

component diameter) 15 mm (0.590 in.)

Linear Range of Motion ± 2 mm (0.080 in.)

Linear Adjustment Sensitivity < 0.1 mm (0.004 in.)

Angular Range of Motion ± 1.5° in both axis

Angular Adjustment

Sensitivity < 0.1 minute

Material and Finish Aluminum, anodized black

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Last modified: December 30, 2000

2-Axis and 4-Axis Precision Positioners - Optima Precision Inc.

Laser Diode Specifications - Sanyo DL4039-011

DL403911.PDF (83K) Click on the file name to download an Adobe PDF file covering this page.

675nm / 5mW / 9mm package

Absolute Maximum Ratings (Tc=25ºC)

Characteristic Symbol Value Unit

DL4039-011 9mm Package

Internal Circuit & Pin Connections

Optical output power Po 10 mW

Laser diode reverse voltage VR(LD) 2 V

Photodiode reverse voltage VR(PD) 30 V

Operating temperature Topr -10 to +50 ºC

Storage temperature Tstg -40 to +85 ºC

Optical and Electrical Characteristics (Tc=25ºC)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith - 40 70 mA -

Operating current Iop - 60 90 mA Po=10mW

Lasing wavelength λp665 675 685 nm Po=10mW

Beam divergence (parallel) θ // 6 8 10 deg Po=10mW (FWHM)

Beam divergence (perpendicular) θ ⊥ 25 30 40 deg Po=10mW (FWHM)

Differential efficiency η0.2 0.5 - mW/mA -

Monitor current Im 0.05 0.15 0.40 mA Po=10mW

Astigmatism As - 8 - microns Po=10mW

and safety.

Sanyo DL4039-011 - Laser Diode Specifications -

Top of Page Home e-mail More Laser Diodes

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Sanyo DL4039-011 - Laser Diode Specifications -

For current pricing and stock availability please contact:

Optima Precision Inc. 775 SW Long Farm Road West Linn, Oregon 97068 U.S.A.

Phone: (503) 638-2525 Fax: (503) 638-4545 email: optima@optima-optics.com

Website: http://www.optima-optics.com

Disclaimer: The laser diode information summarized above is based on the respective diode manufacturers commercial catalog and/or data sheet specifications.

The data is presumed to be accurate; however, it is subject to change without notice. Optima makes no representation as to the accuracy of the information and does not

assume any responsibility for errors or omissions contained herein.The user must refer to the manufacturers specifications for details concerning the intended application

and operation, diode limitations, and safety.

Sanyo DL4039-011

Laser Diode Specifications

Absolute Maximum Ratings (Tc=25 C)

The Sanyo DL4039-011 is an index guided AlGaInP laser diode with a typical output

of 670nm and a maximum of 10mW. The diode features low threshold current

which is achieved by a strained multi-quantum well active layer. The DL4039-011 is

suitable for applications including bar-code readers, laser pointers, and laser levels.

The DL4039-011 has a ∅9mm package.

Operating and Electrical Characteristics (Tc=25 C)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith  40 70 mA 

Operating current Iop  60 90 mA Po=10mW

Lasing Wavelength

p 665 675 685 nm Po=10mW

Beam divergence (parallel)

θ//

6 8 10 deg Po=10mW, (FWHM)

Beam divergence (perpendicular)

θ⊥

25 30 40 deg Po=10mW, (FWHM)

Differential efficiency

0.2 0.5  mW/mA 

Monitor current Im 0.05 0.15 0.4 mA Po=10mW

Astigmatism As  8  microns Po=10mW

Package Type: Ø9mm

Ø9mm

Internal Circuit

LD PD

123

Revised06JUN99

Characteristic Symbol Value Unit

Optical output power Po 10 mW

Laser diode reverse voltage V

R(LD)

Photodiode reverse voltage V

R(PD)

30 V

Operating temperature Topr  10 to +50 °C

Storage temperature Tstg  40 to +85 °C

Laser Diode Specifications - Sanyo DL3147-261

DL314761.PDF (84K) Click on the file name to download an Adobe PDF file covering this page.

645nm / 7mW / 5.6mm package

Absolute Maximum Ratings (Tc=25ºC)

Characteristic Symbol Value Unit

DL3147-261 5.6mm Package

Internal Circuit & Pin Connections

Optical output power Po 7 mW

Laser diode reverse voltage VR(LD) 2 V

Photodiode reverse voltage VR(PD) 30 V

Operating temperature Topr -10 to +70 ºC

Storage temperature Tstg -40 to +85 ºC

Optical and Electrical Characteristics (Tc=25ºC)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith - 45 60 mA -

Operating current Iop - 60 80 mA Po=5mW

Operating voltage Vop - 2.2 2.5 V Po=5mW

Lasing wavelength λp- 645 660 nm Po=5mW

Beam divergence (parallel) θ // 6 7.5 10 deg Po=5mW (FWHM)

Beam divergence (perpendicular) θ ⊥ 25 30 40 deg Po=5mW (FWHM)

Differential efficiency η0.15 0.35 - mW/mA -

Monitor current Im 0.05 0.15 0.5 mA Po=5mW

Astigmatism As - 8 - microns Po=5mW

Sanyo DL3147-261 - Laser Diode Specifications

and safety.

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Last modified: December 30, 2000

Sanyo DL3147-261 - Laser Diode Specifications

For current pricing and stock availability please contact:

Optima Precision Inc. 775 SW Long Farm Road West Linn, Oregon 97068 U.S.A.

Phone: (503) 638-2525 Fax: (503) 638-4545 email: optima@optima-optics.com

Website: http://www.optima-optics.com

Disclaimer: The laser diode information summarized above is based on the respective diode manufacturers commercial catalog and/or data sheet specifications.

The data is presumed to be accurate; however, it is subject to change without notice. Optima makes no representation as to the accuracy of the information and does not

assume any responsibility for errors or omissions contained herein.The user must refer to the manufacturers specifications for details concerning the intended application

and operation, diode limitations, and safety.

Sanyo DL3147-261

Laser Diode Specifications

Operating and Electrical Characteristics (Tc=25 C)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith  45 65 mA CW

Operating current Iop  60 80 mA Po=5mW

Operating voltage Vop  2.2 2.5 V Po=5mW

Lasing Wavelength

p  645 660 nm Po=5mW

Beam divergence (parallel)

θ//

6 7.5 10 deg Po=5mW, (FWHM)

Beam divergence (perpendicular)

θ⊥

25 30 40 deg Po=5mW, (FWHM)

Differential efficiency

0.15 0.35  mW/mA 

Monitor current Im 0.05 0.15 0.5 mA Po=5mW

Astigmatism As  8  microns Po=5mW

Package Type: Ø5.6mm

Ø5.6mm

Internal Circuit

LD PD

123

Revised06JUN99

Absolute Maximum Ratings (Tc=25 C)

The Sanyo DL3147-261 is an index guided AlGaInP laser diode with a typical output

of 645nm. The diode features low threshold current and an extended operating

temperature which is achieved by a strained multi-quantum well active layer.

The DL3147-261 is suitable for applications including optical disc systems,

DVD-ROM and similar optical storage products. The DL3147-261 has a ∅5.6mm

package.

Characteristic Symbol Value Unit

Optical output power Po 7 mW

Laser diode reverse voltage V

R(LD)

Photodiode reverse voltage V

R(PD)

30 V

Operating temperature Topr  10 to +70 °C

Storage temperature Tstg  40 to +85 °C

Laser Diode Specifications

Optima is no longer recommending, selling, or supporting

Hitachi laser diodes.

All Hitachi laser diode specifications have been removed from

the Optima website.

Possible substitute part: Mitsubishi ML1012R or Mitsubishi

ML1013R

Detailed specifications and pricing for laser diodes from other

manufacturers are listed in the main Optima laser diode page.

Please click on the following link for more information:

http://www.optima-optics.com/ld.htm

OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 27, 2000

Laser Diode Specifications - HL6726MG

Mitsubishi Laser Diode ML1012R Specifications

ML1012R.PDF (92K) Click on the file name to download an Adobe PDF file covering this page.

685nm / 35mW / 5.6mm package

Absolute Maximum Ratings (Tc=25ºC)

Characteristic Symbol Value Unit

ML1012R, 5.6mm Package

Internal Circuit & Pin Connections

Optical output power Po 35 mW

Pulse optical power output Po (pulse) 50*

Laser diode reverse voltage VR(LD) 2 V

Photodiode reverse voltage VR(PD) 30 V

Photodiode forward current IF(PD) 10 mA

Operating temperature Topr -10 to +60 ºC

Storage temperature Tstg -10 to +100 ºC

Notes: * Pulse condition: Less than 50% duty cycle, less than 1µs pulse width.

Optical and Electrical Characteristics (Tc=25ºC)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith - 35 60 mA -

Operating current Iop - 80 120 mA Po=30mW

Slope efficiency η- 0.75 - mW/mA Po=30mW

Laser diode operating voltage Vop 2.0 2.4 3.0 V Po=30mW

Lasing wavelength λp670 685 700 nm Po=30mW

Beam divergence (parallel) θ // 7 9.5 12 deg Po=30mW (FWHM)

Mitsubishi ML1012R - Laser Diode Specifications

Beam divergence (perpendicular) θ ⊥ 16 20 25 deg Po=30mW (FWHM)

Monitor current Im 0.05 0.2 1.5 mA Po=30mW, VR(PD)=1V,

RL=10 ohm (PD resistance load)

Photodiode dark current ID(PD) - - 0.5 µ A VR(PD)=10V

Photodiode capacitance CT(PD) - 7 - pF f=1MHz, VR(PD)=5V

and safety.

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Last modified: December 30, 2000

Mitsubishi ML1012R - Laser Diode Specifications

For current pricing and stock availability please contact:

Optima Precision Inc. 775 SW Long Farm Road West Linn, Oregon 97068 U.S.A.

Phone: (503) 638-2525 Fax: (503) 638-4545 email: optima@optima-optics.com

Website: http://www.optima-optics.com

Disclaimer: The laser diode information summarized above is based on the respective diode manufacturers commercial catalog and/or data sheet specifications.

The data is presumed to be accurate; however, it is subject to change without notice. Optima makes no representation as to the accuracy of the information and does not

assume any responsibility for errors or omissions contained herein.The user must refer to the manufacturers specifications for details concerning the intended application

and operation, diode limitations, and safety.

Mitsubishi ML1012R

Laser Diode Specifications

Absolute Maximum Ratings (Tc=25 C)

The Mitsubishi ML1012R is a high power AlGaInP laser diode which provides a

stable, single transverse mode oscillation with a typical emission wavelength of

685nm and the continuous light output of 30mW. The diode is suitable for large

capacity optical disc memories and similar optical systems. With a visible

wavelength operating between 670nm and 700nm, the 30mW CW output is highly

visible. The ML1012R has a 5.6mm diameter package.

Operating and Electrical Characteristics (Tc=25 C)

Characteristic Symbol Value Unit

Optical output power Po 35 mW

Pulse optical output power Po (pulse) 50 * mW

Laser diode reverse voltage V

R(LD)

Photodiode reverse voltage V

R(PD)

30 V

Photodiode forward current I

F(PD)

10 mA

Operating temperature Topr  10 to +60 °C

Storage temperature Tstg  10 to +100 °C

Notes: * Pulse condition - Less than 50% duty cycle, less than 1

s pulse width

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith  35 60 mA 

Operating current Iop  80 120 mA Po=30mW

Slope efficiency

 0.75  mW/mA Po=30mW

Operating voltage Vop 2.0 2.4 3.0 V Po=30mW

Lasing Wavelength

p 670 685 700 nm Po=30mW

Beam divergence (parallel)

θ//

7 9.5 12 deg Po=30mW, (FWHM)

Beam divergence (perpendicular)

θ⊥

16 20 25 deg Po=30mW, (FWHM)

Monitor current Im 0.05 0.2 1.5 mA Po=30mW, V

R(PD)

=1V

=10V

(PD resistance load)

Photodiode dark current I

D(PD)

  0.5

R(PD)=10V

Photodiode capacitance C

T(PD)

 7  pF f=1MHz, V

R(PD)

=5V

Package Type: Ø5.6mm

Ø5.6mm 3

Internal Circuit

LD PD

132

Revised06JUN99

Mitsubishi Laser Diode ML1013R Specifications

ML1013R.PDF (92K) Click on the file name to download an Adobe PDF file covering this page.

685nm / 50mW / 5.6mm package

Absolute Maximum Ratings (Tc=25ºC)

Characteristic Symbol Value Unit

ML1013R, 5.6mm Package

Internal Circuit & Pin Connections

Optical output power Po 50 mW

Pulse optical power output Po (pulse) 60*

Laser diode reverse voltage VR(LD) 2 V

Photodiode reverse voltage VR(PD) 30 V

Photodiode forward current IF(PD) 10 mA

Operating temperature Topr -10 to +60 ºC

Storage temperature Tstg -10 to +100 ºC

Notes: * Pulse condition: Less than 50% duty cycle, less than 1µs pulse width.

Optical and Electrical Characteristics (Tc=25ºC)

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith - 35 60 mA -

Operating current Iop - 100 140 mA Po=50mW

Slope efficiency η- 0.75 - mW/mA Po=50mW

Laser diode operating voltage Vop 2.0 2.7 3.0 V Po=50mW

Lasing wavelength λp670 685 700 nm Po=50mW

Beam divergence (FWHM) θ // 7 9.5 12 deg Po=50mW

Mitsubishi ML1013R - Laser Diode Specifications

Beam divergence (FWHM) θ ⊥ 16 20 25 deg Po=50mW

Monitor current Is 0.05 0.3 2.5 mA Po=50mW, VR(PD)=1V,

RL=10 ohm (PD resistance load)

Photodiode dark current ID(PD) - - 0.5 µ A VR(PD)=10V

Photodiode capacitance CT(PD) - 7 - pF f=1MHz, VR(PD)=5V

and safety.

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Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Mitsubishi ML1013R - Laser Diode Specifications

For current pricing and stock availability please contact:

Optima Precision Inc. 775 SW Long Farm Road West Linn, Oregon 97068 U.S.A.

Phone: (503) 638-2525 Fax: (503) 638-4545 email: optima@optima-optics.com

Website: http://www.optima-optics.com

Disclaimer: The laser diode information summarized above is based on the respective diode manufacturers commercial catalog and/or data sheet specifications.

The data is presumed to be accurate; however, it is subject to change without notice. Optima makes no representation as to the accuracy of the information and does not

assume any responsibility for errors or omissions contained herein.The user must refer to the manufacturers specifications for details concerning the intended application

and operation, diode limitations, and safety.

Mitsubishi ML1013R

Laser Diode Specifications

Absolute Maximum Ratings (Tc=25 C)

The Mitsubishi ML1013R is a high power AlGaInP laser diode which provides a

stable, single transverse mode oscillation with a typical emission wavelength of

685nm and the continuous light output of 50mW. The diode is suitable for large

capacity optical disc memories and similar optical systems. With a visible

wavelength operating between 670nm and 700nm, the 50mW CW output is

highly visible. The ML1013R has a 5.6mm diameter package.

Operating and Electrical Characteristics (Tc=25 C)

Characteristic Symbol Value Unit

Optical output power Po 50 mW

Pulse optical output power Po (pulse) 60 * mW

Laser diode reverse voltage V

R(LD)

Photodiode reverse voltage V

R(PD)

30 V

Photodiode forward current I

F(PD)

10 mA

Operating temperature Topr  10 to +60 °C

Storage temperature Tstg  10 to +100 °C

Notes: * Pulse condition - Less than 50% duty cycle, less than 1

s pulse width

Characteristic Symbol Min. Typ. Max. Unit Test Condition

Threshold current Ith  35 60 mA 

Operating current Iop  100 140 mA Po=50mW

Slope efficiency

 0.75  mW/mA Po=50mW

Operating voltage Vop 2.0 2.7 3.0 V Po=50mW

Lasing Wavelength

p 670 685 700 nm Po=50mW

Beam divergence (parallel)

θ//

7 9.5 12 deg Po=50mW, (FWHM)

Beam divergence (perpendicular)

θ⊥

16 20 25 deg Po=50mW, (FWHM)

Monitor current Im 0.05 0.3 2.5 mA Po=50mW, V

R(PD)

=1V

=10V

(PD resistance load)

Photodiode dark current I

D(PD)

  0.5

R(PD)=10V

Photodiode capacitance C

T(PD)

 7  pF f=1MHz, V

R(PD)

=5V

Package Type: Ø5.6mm

Ø5.6mm 3

Internal Circuit

LD PD

132

Revised06JUN99

Laser Diode Specifications

Optima is no longer recommending, selling, or supporting

Hitachi laser diodes.

All Hitachi laser diode specifications have been removed from

the Optima website.

Possible substitute part: None

Detailed specifications and pricing for laser diodes from other

manufacturers are listed in the main Optima laser diode page.

Please click on the following link for more information:

http://www.optima-optics.com/ld.htm

OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 27, 2000

Laser Diode Specifications - HL1326MF

Laser Diode Optics

Cost Effective Optima Lenses for Collimating and Focusing Laser Diodes

Collimating and focusing a laser diode is perhaps the most critical prerequisite in any laser diode application. While the characteristics of a laser diode might be ideal for your

application, the laser diode must be matched with the appropriate optics to create a useable beam. Typically, the laser diode is collimated with one lens and a second lens is

used to focus the beam. However, many applications exist where a single lens is used to either focus or collimate the beam. In either case, most laser diodes require a

collimating lens with a large numerical aperture (NA) to efficiently capture the widely divergent perpendicular axis.

Optima manufacturers the following laser diode lenses and laser diode optics:

Multiple Element Collimating and Focusing Lenses

Molded Glass Aspheric Lenses

Injection Molded Plastic Aspheric Lenses

Achromats, Doublets, Plano-convex, Plano-concave, etc....

LD_OPTIC.PDF (179K) Click on the file name to download an Adobe PDF file covering multi-element lenses,

molded glass aspheric lenses, and injection molded plastic aspheric lenses.

MULTIELE.PDF (160K) Click on the file name to download an Adobe PDF file covering only multi-element lenses.

Collimating & Focusing Lenses for Laser Diodes - Optima Precision Inc.

MOLDED.PDF (66K) Click on the file name to download an Adobe PDF file covering only molded glass aspheric lenses.

PLASTIC.PDF (67K) Click on the file name to download an Adobe PDF file covering only injection molded plastic lenses.

Top of Page Home e-mail

OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Collimating & Focusing Lenses for Laser Diodes - Optima Precision Inc.

Multi-Element Laser Diode

Collimating and Focusing Lenses

MULTIELE.PDF (160K) Click on the file name to download an Adobe PDF file covering this section.

For the most demanding application, a three or four element spherical lens achieves a level of optical performance difficult to obtain with any single element lens. To assure

diffraction-limited performance, start by collimating the diode with one of the Optima 336 Series multi-element lenses. All 336 Series lenses are computer optimized to

minimize aberrations, maximize coupling efficiency, and function over a broad range of wavelengths and normal manufacturing tolerances. The lenses can be used with most

visible and near-infrared laser diodes and are currently used in a wide array of products including the following:

Bar-code Readers● Alignment and Distance Measuring Systems● Positioning and Edge Finding Equipment● Light Scatter and Particle Counters● Diode Based Interferometers● Fiber Optic Communications●

The following paragraphs briefly describe the attributes and differences between the three 336 Series collimating lenses.

The 336-1027 is an excellent general purpose collimating lens, its small physical size is compatible with both 5.6mm and 9.0mm diameter laser diodes, making a very

compact assembly. A relatively large numerical aperture (NA) of 0.48 captures a large percentage of the beam from most common laser diodes -- coupling efficiencies

typically range from 91% to 95%. The 336-1027 is available with three standard MgF2 anti-reflection coatings designated as: -660 for visible laser diodes (633nm to 750nm);

-785 for use with most near-infrared diodes (750nm to 980nm); and the -140 AR coating for use with 1300nm and 1550nm laser diodes.

The 336-0965-780 is a very high quality collimating lens suitable for more demanding applications. With a longer focal length and larger clear aperture, this lens provides a

slightly larger collimated beam and consequently lower beam divergence. A moderate numerical aperture of 0.389 provides coupling efficiencies ranging from 83% to 85%.

The 336-0808-830 has a longer focal length and larger clear aperture than either of the lenses described above creating the largest collimated beam diameter. The

336-0808-830 is recommended for precision alignment systems, laser range finding, and other applications that require a laser diode beam to be projected over long distances.

Multiple Element Focusing Lens: The 336-0000-780 lens is a three element spherical lens used to refocus the collimated beam from a laser diode. For optimum

performance, the focusing lens should be used with a collimating lens having the same size clear aperture, i.e. the 336-1027 collimating lens. In this case, the large numerical

aperture and short focal length of the focusing lens will provide superior coupling efficiency and diffraction-limited spot.

Multi-element Laser Diode Collimating and Focusing Lenses -- Optima

Multiple Element Spherical Lens Specifications:

Part Number 336-0000-780 336-1027-660 336-1027-785 336-0808-830 336-0965-780

Unit price (Qty 1-49) $26.50 $27.90 $84.00 $73.50

Description Objective Lens Collimating Lens

Conjugate Distance Infinite Infinite

Design Wavelength 780 nm 660 nm 785 nm 830 nm 780 nm

Focal Length 4.516 mm 4.476 mm 4.516 mm 8.001 mm 7.003 mm

Working/Source Distance 2.0 mm 2.17 mm 2.20 mm 2.25 mm 2.0 mm

Numerical Aperture .476 .476 .476 .368 .389

Clear Aperture 4.30 mm 4.30 mm 4.30 mm 5.90 mm 5.45 mm

F# 1.05 1.04 1.05 1.355 1.28

Field Size (diameter) 0.156 mm 0.156 mm 0.158 mm 0.201 mm 0.176 mm

AR Coating, MgF2 780 nm 660 nm 785 nm 830 nm 780 nm

Transmission > 96% > 93% > 95% > 95%

Cover Glass Thickness 1.2 mm 0.25 ~ 0.30 mm

Cover Glass Index (n) 1.55 1.52023 1.51107 1.500 1.525

Cell Material & Finish Aluminum / Black Anodized Brass

Cell Dimensions

(diameter x length) Ø6.4 x 4.85 mm Ø6.4 x 6.3 mm Ø8.0 x 11.0 mm Ø10.0 x 10.0 mm

Top of Page Home e-mail

OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Multi-element Laser Diode Collimating and Focusing Lenses -- Optima

OptimaﬁLaser Diode Optics

Multi-Element Lenses for Optimal Performance

For the most demanding applications, a three or four element spherical lens achieves a level of optical performance

difficult to obtain with any single element lens. To assure diffraction-limited performance, start by collimating the diode

with one of the Optima 336 Series multi-element lenses. All 336 Series lenses are computer optimized to minimize

aberrations, maximize coupling efficiency, and function over a broad range of wavelengths and normal manufacturing

tolerances. The lenses can be used with most visible and near-infrared laser diodes and are currently used in a wide

array of products including the following:

•Linear and Rotary Encoders

•Free-space Laser Communication Systems

•Bar-code Readers

Revised 01JAN01

•Alignment and Distance Measuring Systems

•Positioning and Edge Finding Equipment

•Light Scatter and Particle Counters

Cost Effective Lenses for Collimating and Focusing Laser Diodes

Collimating and focusing a laser diode is

perhaps the most critical prerequisite in any

laser diode application. While the charac-

teristics of a laser diode might be ideal for your

application, the laser diode must be matched

with the appropriate optics to create a useable

beam. Typically, the laser diode is collimated

with one lens and a second lens is used to

focus the beam. However, many applications

exist where a single lens is used to either focus

or collimate the beam. In either case, most

laser diodes require a collimating lens with a

large numerical aperture (NA) to efficiently

capture the widely divergent perpendicular axis.

The following paragraphs briefly describe the attributes and differences between the three 336 Series collimating

lenses.

336-1027-660, -785, and -140 — These are excellent general purpose collimating lenses; its small physical size is

compatible with both 5.6mm and 9.0mm diameter laser diodes, making a very compact assembly. A relatively large

numerical aperture (NA) of 0.48 captures a large percentage of the beam from most common laser diodes — coupling

efficiencies typically range from 91% to 95%. The 336-1027 is available with three standard MgF2 anti-reflection

coatings designated as: -660 for visible laser diodes (633nm to 750nm); -785 for use with most near-infrared diodes

(750nm to 980nm); and the -140 AR coating for use with 1300nm to 1550nm laser diodes.

336-0965-780 — This is a very high quality collimating lens suitable for more demanding applications where wavefront

aberration is critical. With a longer focal length and larger clear aperture, this lens provides a slightly larger collimated

beam and consequently lower beam divergence. A moderate numerical aperture of 0.389 provides coupling

efficiencies ranging from 83% to 85%.

336-0808-830 — With a longer focal length and larger clear aperture than either of the lenses described above, this

lens creates the largest collimated beam diameter. The 336-0808-830 is recommended for precision alignment

systems, laser range finding, and other applications that require a laser diode beam to be projected over long

distances with low divergence.

Multiple Element Focusing Lens — The 336-0000-780 lens is a three element spherical lens used to refocus the

collimated beam from a laser diode. For optimum performance, the focusing lens should be used with a collimating

lens having the same size clear aperture, i.e. the 336-1027 collimating lens. In this case, the large numerical aperture

and short focal length of the focusing lens will provide superior coupling efficiency and diffraction-limited spot.

Optima Multiple Element Spherical Lens Specifications:

PART NUMBER 336-0000-780 336-1027-660 336-1027-785 336-0808-830 336-0965-780

UNIT PRICE (Qty 1-49 pcs.)

$26.50 $27.90 $84.00 $73.50

DESCRIPTION

Objective lens Collimating lens

CONJUGATE DISTANCE

Infinite Infinite

DESIGN WAVELENGTH (note 1)

780nm 660nm 785nm 830nm 780nm

FOCAL LENGTH

4.516mm 4.476mm 4.516mm 8.01mm 7.003mm

WORKING / SOURCE DISTANCE

2.0mm 2.17mm 2.20mm 2.25mm 2.0mm

NUMERICAL APERTURE

0.476 0.476 0.476 0.368 0.389

CLEAR APERTURE

4.30mm 4.30mm 4.30mm 5.89mm 5.45mm

1.05 1.04 1.05 1.36 1.28

FIELD SIZE DIAMETER

0.156mm 0.156mm 0.158mm 0.201mm 0.176mm

AR COATING DESIGN CENTER, MgF2

780nm 660nm 785nm 830nm 780nm

TRANSMISSION

>96% >93% >95% >95%

COVER GLASS THICKNESS

1.2mm 0.25mm ~ 0.30mm

COVER GLASS INDEX (n)

1.55 1.52023 1.51107 1.51097 45

CELL MATERIAL & FINISH

Aluminum / Black Anodized Brass

CELL DIMENSIONS (diameter x length)

Ø6.4mm x 4.85mm Ø6.4mm x 6.3mm Ø8mm x 11mm Ø10mm x 10mm

Notes: 1) In the specifications listed above, the design wavelength is used to calculate the focal length; however, this does not limit use of the lens

to this particular wavelength  these lenses can be used with both near-infrared and visible laser diodes from 635nm through 850nm.

Revised 01JAN01

Optima P/N: 336-1027-xxx

Optima P/N: 336-0808-830

Optima P/N: 336-0000-780

Optima P/N: 336-0965-780

Molded Glass Aspheric Lenses

MOLDED.PDF (66K) Click on the file name to download an Adobe PDF file covering this section.

Collimating and Focusing Lenses for Laser Diodes

Diffraction-limited and very cost effective, a precision-molded glass aspheric lens is an attractive compromise between a multi-element lens and a molded plastic lens. The

molded glass asphere has two basic advantages over a multi-element lens; first, the aspheric design reduces spherical aberration and coma in a single element; and second,

overall light transmission is generally greater with fewer optical surfaces.

As compared with plastic lenses; molded glass aspheric lenses will operate over a much broader temperature and humidity range without performance degrading. Because of

these advantages, molded glass lenses are often used in products such as laser printers, optical disc storage devices, and optical communications systems.

New Lens — A larger numerical aperture is often very desirable when coupling a collimating lens with a laser diode. Our newest molded glass asphere P/N

305-0464-780, has an NA of 0.5 and a focal length of 4mm which seems ideally suited for many laser diode applications. With a 0.5 NA a coupling efficiency over 90% can

be achieved with most diodes. Detailed specifications are listed below:

The popular 305-0065-780 aspheric lens is available in three configurations: an unmounted single element, part number 305-0065-780, and two convenient mounted lenses

which help reduce some of the tedious problems associated with handling a very small lens. The 306-0065-780 mount has an extra-fine pitch thread (.375-64) on the outside

diameter that facilitates precise control in adjusting the focus or collimation of a laser diode. The 310-0065-780 mount is a plain 8mm diameter aluminum cell that can be

easily incorporated into the user's laser diode assembly.

The 305-8040-780 is now available with a threaded mount, P/N 307-8040-780.

Threaded Mount, with 3/8-64 fine pitch thread, part numbers and prices:

Basic optical specifications are the same as the lenses listed in the "unmounted" table below.

Part Number Unit price (Qty 1-49) Dimensions (thread diameter x overall length)

306-0065-780 $20.90 3/8-64 x 3.2 mm

307-0464-780 $21.85

307-8040-780 $30.55 3/8-64 x 4.95 mm

Molded Glass Aspheric Lenses for Laser Diodes -- Optima Precision Inc.

307-4606-670 $21.50

Mounted lens, cell without threads, part numbers and prices:

Part Number Unit price (Qty 1-49) Dimensions (diameter x overall length)

310-0065-780 $20.50 8mm x 4.95 mm

Unmounted, Molded Glass Aspheric Lens Specifications:

Part Number (unmounted

lens) 305-0464-780 305-0065-780 305-8040-780 305-4606-670

Unit price (Qty 1-49) $14.60 $16.40 $21.85 $17.00

Description Molded Glass Aspheric Lens, Unmounted

Conjugate Distance Infinite

Design Wavelength 780 nm 780 nm 780 nm 655 nm

Focal Length 4 mm 6.25 mm 8.00 mm 4.60 mm

Working/Source Distance 3.942 mm 4.57 mm 8.33 mm 2.90 mm

Numerical Aperture 0.50 0.40 0.25 0.53

Clear Aperture 4.00 mm 5.00 mm 4.06 mm 4.89 mm

F# 1.00 1.25 1.97 0.94

Field Size (diameter) 0.050 0.100 mm 0.200 mm 0.100 mm

AR Coating, MgF2 780 nm 670 nm

Transmission > 97% > 98% > 96% > 95%

Cover Glass Thickness 0.25 ~ 0.30 mm .275 mm

Cover Glass Index (n) 1.500 1.511 1.511 1.510

Temperature Range (°C) -20 ~ +85

Dimensions (diameter x

length) Ø6.40 x 2.5 mm Ø6.38 x 2.5 mm Ø6.40 x 2.5 mm Ø6.0 x 3.10 mm

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Last modified: December 30, 2000

Molded Glass Aspheric Lenses for Laser Diodes -- Optima Precision Inc.

Revised 01JAN01

Optima

Molded Glass Aspheric Lenses

Diffraction-limited and very cost effective, a precision-molded glass aspheric lens is an attractive compromise between

a multi-element lens and a molded plastic lens. The molded glass asphere has two basic advantages over a

multi-element lens; first, the aspheric design reduces spherical aberration and coma in a single element; and second,

overall light transmission is generally greater with fewer optical surfaces.

As compared with plastic lenses; molded glass aspheric lenses will operate over a much broader temperature and

humidity range without performance degrading. Because of these advantages, molded glass lenses are often used in

products such as laser printers, optical disc storage devices, and optical communications systems.

New Lens P/N 305-0464-780 — A larger numerical aperture is often very desirable when coupling a collimating lens

with a laser diode. Our newest molded glass asphere P/N 305-0464-780, has an NA of 0.5 and a focal length of 4mm

which is ideally suited for many laser diode applications. With a 0.5 NA, a coupling efficiency over 90% can be

achieved with most diodes. Detailed specifications are listed below:

Optima Molded Glass Aspheric Lens Specifications:

PART NUMBER 305-0065-780 305-0464-780 305-4606-670 305-8040-780

UNIT PRICE (Qty 1-49 pcs.)

$16.40 $14.60 $17.00 $21.85

DESCRIPTION

Collimating lens, Molded Glass Asphere, Unmounted

CONJUGATE DISTANCE

Infinite

DESIGN WAVELENGTH (note 1)

780nm 780nm 655nm 780nm

FOCAL LENGTH

6.25mm 4.00mm 4.60mm 8.00mm

WORKING / SOURCE DISTANCE

4.57mm 3.942mm 2.90mm 8.33mm

NUMERICAL APERTURE

0.40 0.50 0.53 0.25

CLEAR APERTURE

5.00mm 4.00mm 4.89mm 4.06mm

1.25 1.00 0.94 1.97

FIELD SIZE DIAMETER

0.100mm 0.050mm 0.100mm 0.200mm

AR COATING DESIGN CENTER, MgF2

780nm 670nm 780nm

TRANSMISSION

>98% >97% >95% >96%

COVER GLASS THICKNESS

0.25mm ~ 0.30mm .275mm 0.25mm ~ 0.30mm

COVER GLASS INDEX (n)

1.511 1.50 1.510 1.500

TEMPERATURE RANGE

-20ºC to +85ºC

LENS DIMENSIONS (diameter x length)

Ø6.38mm x 2.5mm Ø6.40mm x 2.5mm Ø6.00mm x 3.10mm Ø6.40 x 2.5mm

Notes: 1) In the specifications listed above, the design wavelength is used to calculate the focal length; however, this does not limit use of the lens

to this particular wavelength  these lenses can be used with both near-infrared and visible laser diodes from 635nm through 850nm.

Mounted aspheric lens with fine pitch threads — The popular 305-0065-780 aspheric lens is available in three

configurations: an unmounted single element, part number 305-0065-780, and two convenient mounted lenses which

help reduce some of the tedious problems associated with handling a very small lens. The 310-0065-780 mount is a

plain 8mm diameter aluminum cell that can be easily incorporated into the user’s laser diode assembly. Lenses p/n

305-0464-780, 305-4606-670, and p/n 305-8040-780 are also available in a threaded mount, the p/n prefix changes to

306-xxxx-xxx or 307-xxxx-xxx as listed in the table below. All of the threaded mounts have an extra-fine pitch thread

(.375-64) on the outside diameter that facilitates precise control in adjusting the focus or collimation of a laser diode.

MOUNTED ASPHERIC LENS P/N 307-0464-780 306-0065-780 310-0065-780 307-4606-670 307-8040-780

UNIT PRICE (Qty 1-49 pcs.)

$21.85 $20.90 $20.50 $21.50 $30.55

DESCRIPTION

Threaded Mount Plain Cell Threaded Mount

CELL DIMENSIONS (diameter x length)

3/8-64 Thd. x 3.2mm Ø8mm x 4.95mm 3/8-64 Thread x 4.95mm

Injection Molded Plastic Aspheric Lenses

PLASTIC.PDF (67K) Click on the file name to download an Adobe PDF file covering this section.

Collimating and Focusing Lenses for Laser Diodes

While glass lenses are preferred, there are several product applications where a high quality plastic lens can be effectively utilized. The 300 Series plastic aspheric collimating

and objective lenses offer a lower cost alternative to glass and still perform well over a temperature range actually exceeding the upper limit for most laser diodes. Plastic

lenses are used in products such as laser pointers, construction levels, and less critical alignment and position sensing devices.

If you need a collimated beam with smaller dimensions, consider using the 300-0380-780 lens or, the LDM 4500 KIT. For example... when used with the Hitachi

HL6312G (635nm/5mW) laser diode, a collimated beam measures approximately 0.715 mm in the parallel axis by 2.85 mm in the perpendicular axis, with

divergence angles of 1.2 mrad x 0.34 mrad respectively. (The figures mentioned may vary from one diode to another or, with other manufacturers diodes).

The plastic lenses are available unmounted or in a convenient aluminum mount with a .375-64 external thread. The extra-fine pitch thread allows precise adjustment of the

lens when collimating or focusing the beam.

Injection Molded Aspheric Lens Specifications:

Part Number (thread mount) 302-0355-780 302-0360-780 302-0380-780 302-0395-780

Unit price (Qty 1-49) $13.25 $11.15 $13.55 $12.60

Description Injection Molded Plastic Aspheric Lens, with 3/8-64 Threaded Mount

Optical Specifications Basic optical specifications as listed in the following section

Dimensions

(diameter x length) 3/8-64 external thread. x 5.3 mm 3/8-64 external

thread. x 5.9 mm 3/8-64 external

thread. x 3.8 mm

Part Number (unmounted lens) 300-0355-780 300-0360-780 300-0380-780 300-0395-780

Unit price (Qty 1-49) $7.05 $5.15 $4.50 $4.80

Description Injection Molded Plastic Aspheric Lens, unmounted

Conjugate Distance Infinite

Design Wavelength 780 nm

Injection Molded Plastic Lenses for Laser Diodes -- Optima Precision Inc.

Focal Length 4.50 mm 4.50 mm 3.40 mm 16 mm

Working/Source Distance 1.90 mm 1.90 mm 1.43 mm 13.79 mm

Numerical Aperture .50 .45 .471 .144

Clear Aperture 4.50 mm 4.05 mm 3.20 mm 4.60 mm

F# 1.00 1.11 1.06 3.48

Field Size (diameter) 0.110 mm 0.100 mm 0.150 mm 0.559 mm

AR Coating, MgF2 780 nm

Transmission > 97% > 97% > 95% > 97%

Cover Glass Thickness 1.25 mm

Cover Glass Index (n) 1.510 1.55 1.55 1.51

Temperature Range Storage Temperature -30 ~ +75 °C Working Temperature -10 ~ +65 °C

Dimensions

(diameter x length) Ø7.4 x 3.4 mm Ø7.4 x 3.55 mm Ø5.0 x 2.11 mm Ø6.5 x 2.33 mm

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Injection Molded Plastic Lenses for Laser Diodes -- Optima Precision Inc.

Optima

Injection Molded Plastic Aspheric Lenses

While glass lenses are generally preferred, there are several product applications where a high quality plastic lens can

be effectively utilized. The 300 Series plastic aspheric collimating and objective lenses offer a lower cost alternative to

glass and still perform well over a temperature range actually exceeding the upper limit for most laser diodes. Plastic

lenses are used in products such as laser pointers, construction levels, and less critical alignment and position

sensing devices.

New Lens, P/N 300-0380-780 Creates a Smaller Collimated Beam — If you need a collimated beam with smaller

dimensions, consider using the 300-0380-780 plastic lens and/or the Optima LDM 4500 KIT Laser Diode Mounting Kit

which includes the new smaller plastic asphere. As and example... when this lens is used with the Hitachi HL6312G

(635nm/5mW) laser diode, a collimated beam measures approximately 0.715 mm in the parallel axis by 2.85 mm in the

perpendicular axis, with divergence angles of 1.2 mrad x 0.34 mrad respectively. (The figures mentioned may vary from

one diode to another or, with other manufacturers diodes).

P/N 300-0395-780 Creates a Larger, More Circular Collimated Beam — If you need a collimated beam with low

divergence and consequently a smaller beam at long distances, consider the Optima 300-0395-780. With a long focal

length (16mm) and small numerical aperture (NA=.14) this lens creates a relatively large diameter beam that’s more

circular than the output from the typical laser diode collimating lens. Also, the 300-0395-780 lens is a very high-quality

injection molded plastic lens  this lens has been used in digital laser communication systems which are extremely

sensitive to lens aberrations and diffraction patterns that can be misread as data when a beam sweeps across a

detector. The only negative aspect of the lens might be the small NA  the coupling efficiency (or total transmission) for

most visible laser diodes is just under 50%. Please refer to the lens specifications below for detailed information.

For reference we’ve profiled the beam from a 300-0395-780 lens using a Hitachi HL6312G laser diode; at 100 mm from

the lens, a collimated beam measures ~3.38 mm x 4.65 mm (measured at the 1/e

clip point, with 3.38mm being the

laser diode’s parallel axis).

Optima Injection Molded Plastic Aspheric Lens Specifications:

PART NUMBER 300-0355-780 300-0360-780 300-0380-780 300-0395-780

UNIT PRICE (Qty 1-49 pcs.)

$7.05 $5.15 $4.50 $4.80

DESCRIPTION

Collimating lens, Injection Molded Plastic Asphere, Unmounted

CONJUGATE DISTANCE

Infinite

DESIGN WAVELENGTH (note 1)

780nm

FOCAL LENGTH

4.50mm 4.50mm 3.40mm 16mm

WORKING / SOURCE DISTANCE

1.90mm 1.90mm 1.43mm 13.79mm

NUMERICAL APERTURE

0.50 0.45 0.471 0.144

CLEAR APERTURE

4.50mm 4.05mm 3.20mm 4.80mm

1.00 1.11 1.06 1.67

FIELD SIZE DIAMETER

0.100mm 0.050mm 0.150mm 0.100mm

AR COATING DESIGN CENTER, MgF2

780nm

TRANSMISSION

>98% >97% >95% >97%

COVER GLASS THICKNESS

1.25mm

COVER GLASS INDEX (n)

1.510 1.55 1.55 1.51

TEMPERATURE RANGE

Storage Temp. -30ºC to +75ºC, Working Temp. -10ºC to +65ºC

LENS DIMENSIONS (diameter x length)

Ø7.4mm x 3.4mm Ø7.4mm x 3.55mm Ø5.0mm x 2.11mm Ø6.5 x 2.33mm

Revised 01JAN01

Notes: 1) In the specifications listed above, the design wavelength is used to calculate the focal length; however, this does not limit use of the lens

to this particular wavelength  these lenses can be used with both near-infrared and visible laser diodes from 635nm through 850nm.

MOUNTED PLASTIC LENS P/N 302-0355-780 302-0360-780 302-0380-780 302-0395-780

UNIT PRICE (Qty 1-49 pcs.)

$13.25 $11.15 $13.55 $12.60

CELL DIMENSIONS (diameter x length)

3/8-64 Thd. x 5.33mm 3/8-64 Thd. x 5.9mm 3/8-64 Thd. x 3.8mm

Achromats, Doublets, Plano-convex

Plano-concave, Bi-convex, Bi-concave, etc.

In addition to laser diode optics, Optima also manufactures singlet lenses, doublet lenses, and optical flats i.e. mirrors,

beamsplitters, windows, and prisms. Generally, these components are produced at OEM quantity levels and are not

offered in small quantities. However, over the years we have manufactured a few standard achromats with small

diameters and relatively short focal lengths. These high-quality lenses are ideally suited for use in laser diode based

applications:

Standard Achromat Specifications:

Part Number 414-1575-670 414-2085-670 414-3090-785

Unit Price (Qty 1-24) $23.75 $22.70 $26.75

Description Spherical Achromat

Focal Length 15 mm 19.7 mm 30 mm

Design Wavelength 780 nm 785 nm 785 nm

Diameter 7.5 mm 8.5 mm 9.0 mm

Clear Aperture 6.5 mm 7.5 mm 8 mm

Center Thickness 3.68 mm 3.9 mm 5.8 mm

AR Coating, MgF2 670 nm 670 nm 785 nm

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OPTIMA is a registered trademark of Optima Precision Inc.

Send mail to webmaster@optima-optics.com with questions or comments about this web site.

Last modified: December 30, 2000

Achromats, Doublets, Plano-convex, Plano-Concave Lenses -- Optima Precision Inc.