Patent ID: 8847888
Filing Date: 2014-09-30
Classification: G06F

Abstract:
1. An optical mouse, comprising: a body having a bottom surface comprising a location at which light can pass through; a light source configured to emit light having a wavelength within a range of 400-490 nm toward a tracking surface; an image sensor configured to receive light passing through the bottom surface at the location configured to pass light; an optical band pass filter disposed optically between the tracking surface and the image sensor and configured to pass the light having the wavelength within the range of 400-490 nm emitted by the light source and exclude wavelengths from outside of the range of 400-490 nm such that all ambient light and all reflected light from the light source that passes through the bottom surface of the mouse to the image sensor is filtered by the band pass filter; and a controller configured to receive image data from the image sensor and to identify a tracking feature in the image data.