This part is a kind of semiconductor called ADNS-3080.

Function of this product has Optical Mouse Sensor.

Manufacturers : Agilent Technologies

Image and pinout :

Some of the text within the PDF file :

Agilent ADNS-3080 High-performance Optical Mouse Sensor Data Sheet Features • High speed motion detection – up to 40 ips and 15g Description The ADNS-3080 is a high performance addition to Agilent’s popular ADNS family of optical mouse sensors. The ADNS-3080 is based on a new, faster architecture with improved navigation. The sensor is capable of sensing high speed mouse motion - up to 40 inches per second and acceleration up to 15g – for increased user precision and smoothness. The ADNS-3080 along with the ADNS-2120 (or ADNS-2120-001) lens, ADNS-2220 (or ADNS2220-001) assembly clip and HLMP-ED80-XX000 form a complete, compact optical mouse tracking system. There are no moving parts, which means high reliability and less maintenance for the end user. In addition, precision optical [ ... ]

ADNS-3080 PDF Datasheet Download