Patent ID: 8259067
Filing Date: 2012-09-04
Classification: G02B,G06F

Abstract:
1. An apparatus comprising: a housing of a computer mouse: a light source located within the housing, the light source being adapted to provide incident light to a surface, said light source being configured to provide only p-polarized light as said incident light; a polarization filter located within the housing to receive reflected light of the incident light reflected from the surface, the polarization filter being adapted to filter out s-polarized light of the reflected light, wherein the polarization filter is located within the housing such that said incident light from the light source does not travel through the polarization filter to reach the surface; an image sensor located within the housing, the image sensor being adapted to capture the filtered light, said image sensor including support circuits to convert the captured filtered light to image data; and a processor connected to said image sensor, said processor adapted to process the image data to detect features of the surface.