Ordering Information
Specify Part Number as follows:
Flange Part Number Material
Round ADNS-2120 Polycarbonate
Trim ADNS-2120-001 Polycarbonate
Description
The ADNS-2120 and ADNS-2120-001 Solid-State Optical
Mouse Lens is designed for use with Avago Optical Mouse
Sensors and the illumination subsystem provided by the
ADNS-2220-001 LED Assembly Clip and the HLMP-ED80-
XX000 LED. Together with the LED, the ADNS-2120 and
ADNS-2120-001 provide the directed illumination and
optical imaging necessary for proper operation of the
Optical Mouse Sensor. The lens is a precision molded
optical component and should be handled with care to
avoid scratching of the optical surfaces.
ADNS-2120
Solid-State Optical Mouse Lens
Data Sheet
2
Outline Drawings
ADNS-2120
ADNS-2120-001
6.00
(0.236)
8.00
(0.315)
OPTICAL
AXIS
3.00
(0.118)
14.50 ± 0.02
(0.571 ± 0.001)
9.95 ± 0.02
(0.392 ± 0.001)
12.95 ± 0.03
(0.510 ± 0.001)
1.15 ± 0.02
(0.061 ± 0.001)
7.03 ± 0.03
(0.277 ± 0.001)
1.30 ± 0.03
(0.051 ± 0.001)
2.05
(0.081)
42.00
(1.654)
∅
39.50
(1.555) 38.50
(1.516)
NOTES:
1. DIMENSIONS IN MILLIMETERS (INCHES).
2. TOLERANCE IS ±0.2 mm (±0.79 INCHES) EXCEPT WHERE NOTED.
3. THERE IS A FLASH TOLERANCE OF 0.2 mm MAX. ON THE FLANGE.
OPTICAL
AXIS
3.00
(0.118)
14.50 ± 0.02
(0.571 ± 0.001)
9.95 ± 0.02
(0.392 ± 0.001)
12.95 ± 0.03
(0.510 ± 0.001)
1.55 ± 0.02
(0.061 ± 0.001)
7.03 ± 0.03
(0.277 ± 0.001)
1.30 ± 0.03
(0.051 ± 0.001)
2.05
(0.081)
16.00
(0.64)
30.50
(1.20)
6.00
(0.236)
8.00
(0.315)
NOTES:
1. DIMENSIONS IN MILLIMETERS (INCHES).
2. TOLERANCE IS ±0.2 mm (±0.79 INCHES) EXCEPT WHERE NOTED.
3. THERE IS A FLASH TOLERANCE OF 0.2 mm MAX. ON THE FLANGE.
3
Mechanical Assemble Requirements
All specications reference Figure 1, Optical System Assembly Diagram.
Parameter Symbol Min. Typical Max. Units Conditions
Distance from Object Surface A 2.3 2.4 2.5 mm
to Lens Reference Plane
Distance from Mouse Sensor B 9.43 mm Sensor lid must be in contact with
Lid contact with lens Surface lens housing surface
to Object Surface
Figure 1. Optical system assembly diagram.
Figure 2. Logo locations.
B
ADNS-2120
MOUSE SENSOR LID
OBJECT SURFACE
A
NOTES:
1. TOPSIDE LOGO EXTENDS 0.2 mm ABOVE THE FLANGE SURFACE.
2. BOTTOMSIDE LOGO EXTENDS 0.1 mm BELOW THE SURFACE.
3. BOTTOMSIDE LOGO IS EITHER LEFT SIDE, AS SHOWN AS ABOVE, OR PRISM SIDE OF THE LENS.
LENS
PRISM
BOTTOM SIDE
Lens Design Optical Performance Specications
All specications are based on the Mechanical Assembly Requirements.
Parameter Symbol Min. Typical Max. Units Conditions
Numerical Aperture NA 0.1 0.13 0.16
Magnication 0.85 1.00 1.15 Image at nominal location
Design Wavelength l 639 nm
Object to Image Distance 10.85 mm
Lens Material*Index of Refraction N 1.580 1.5818 1.5840 l = 639 nm
Depth of Field DOF ±0.5 mm
Field Coverage Radius 1.8 mm
*Lens material is polycarbonate. Cyanoacrylate based adhesives should not be used as they will cause lens material deformation.
Mounting Instructions for the
ADNS-2120 Lens to the Base Plate
An IGES format drawing file with
design specications for mouse base
plate features is available.
These features are useful in main-
taining proper positioning and
alignment of the ADNS-2120 when
used with the Avago Optical Mouse
Sensor. This le can be obtained by
contacting your local Avago sales
representative.
Figure 3. Illustration of base plate mounting features.
KEY PYRAMID FEATURE:
2.50 mm HEIGHT MAX.
LENS RECESS DIMENSIONS:
ADNS-2120 430 mm DIA
ADNS-2120-001 31.5 x 17.0 mm
Note:
ADNS-2120 lens has a large round ange to provide a long creepage path for any ESD events
that occur at the opening of the base plate. For improved ESD performance, the lens ange
can be sealed (i.e., glued) to the base plate. Note that the lense material is polycarbonate and
therefore, cyanocrylate based adhesives or other adhesives that may damage the lens should
NOT be used.
For product information and a complete list of distributors, please go to our website: www.avagotech.com
Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies Limited in the United States and other countries.
Data subject to change. Copyright © 2005-2008 Avago Technologies Limited. All rights reserved. Obsoletes 5989-1238EN
AV02-1256EN - May 13, 2008