ADNS-2120 Solid-State Optical Mouse Lens Data Sheet 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-ED80XX000 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. Ordering Information Specify Part Number as follows: Flange Part Number Material Round ADNS-2120 Polycarbonate Trim ADNS-2120-001 Polycarbonate Outline Drawings ADNS-2120 3.00 (0.118) 42.00 (1.654) 6.00 (0.236) 39.50 (1.555) 38.50 (1.516) 8.00 (0.315) 14.50 0.02 (0.571 0.001) 7.03 0.03 (0.277 0.001) 9.95 0.02 (0.392 0.001) 12.95 0.03 (0.510 0.001) 2.05 1.30 0.03 (0.081) (0.051 0.001) 1.15 0.02 (0.061 0.001) 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 ADNS-2120-001 30.50 (1.20) 3.00 (0.118) 8.00 (0.315) 6.00 (0.236) 16.00 (0.64) 14.50 0.02 (0.571 0.001) 7.03 0.03 (0.277 0.001) 9.95 0.02 (0.392 0.001) 1.55 0.02 (0.061 0.001) OPTICAL AXIS 12.95 0.03 (0.510 0.001) 2.05 1.30 0.03 (0.081) (0.051 0.001) 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. Mechanical Assemble Requirements All specifications reference Figure 1, Optical System Assembly Diagram. Parameter Symbol Distance from Object Surface A to Lens Reference Plane Min. Typical Max. Units 2.3 2.4 2.5 mm Distance from Mouse Sensor B 9.43 mm Lid contact with lens Surface to Object Surface MOUSE SENSOR LID ADNS-2120 B A OBJECT SURFACE Figure 1. Optical system assembly diagram. LENS PRISM BOTTOM SIDE 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. Figure 2. Logo locations. Conditions Sensor lid must be in contact with lens housing surface Lens Design Optical Performance Specifications All specifications are based on the Mechanical Assembly Requirements. Parameter Symbol Min. Typical Max. Numerical Aperture NA 0.1 0.13 0.16 0.85 1.00 1.15 Magnification Units Conditions Image at nominal location l 639 nm Object to Image Distance 10.85 mm Lens Material*Index of Refraction N 1.5818 Depth of Field DOF 0.5 mm Field Coverage Radius 1.8 mm Design Wavelength 1.580 1.5840 l = 639 nm *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 specifications for mouse base plate features is available. LENS RECESS DIMENSIONS: ADNS-2120 430 mm DIA ADNS-2120-001 31.5 x 17.0 mm These features are useful in maintaining proper positioning and alignment of the ADNS-2120 when used with the Avago Optical Mouse Sensor. This file can be obtained by contacting your local Avago sales representative. KEY PYRAMID FEATURE: 2.50 mm HEIGHT MAX. Figure 3. Illustration of base plate mounting features. Note: ADNS-2120 lens has a large round flange 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 flange 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 (c) 2005-2008 Avago Technologies Limited. All rights reserved. Obsoletes 5989-1238EN AV02-1256EN - May 13, 2008