This part is a kind of semiconductor called APDS-9960.
Function of this product has RGB and Gesture Sensor.
Manufacturers : AVAGO
Image and pinout :

Some of the text within the PDF file :
APDS-9960 Digital Proximity, Ambient Light, RGB and Gesture Sensor Data Sheet Description The APDS-9960 device features advanced Gesture detection, Proximity detection, Digital Ambient Light Sense (ALS) and Color Sense (RGBC). The slim modular package, L 3.94 x W 2.36 x H 1.35 mm, incorporates an IR LED and factory calibrated LED driver for drop-in compatibility with existing footprints. Gesture detection Gesture detection utilizes four directional photodiodes to sense reflected IR energy (sourced by the integrated LED) to convert physical motion information (i.e. velocity, direction and distance) to a digital information. The architecture of the gesture engine features automatic activation (based on Proximity engine results), ambient light subtraction, cross-talk cancelation, dual 8-bit [ ... ]
APDS-9960 PDF Datasheet Download
