Patent ID: 8803967
Filing Date: 2014-08-12
Classification: G01S,G02B,H04N

Abstract:
1. A time of flight camera, comprising: a substrate, forming a front cover of the camera; rectangular frusto pyramidal reflectors formed in a surface of the substrate, wherein each rectangular frusto pyramidal reflector formed in the surface of the substrate includes a center port; a light emitter located at a bottom of each frusto pyramidal reflector in the center port for producing modulated light for illuminating a scene; a time of flight detector chip for detecting light from the scene; and an aperture located in a port for collecting light from the scene and focusing the light onto the detector chip, wherein the frusto pyramidal reflector uniformly directs the modulated light from the light emitter onto the scene so that a rectangular field of illumination matches a rectangular field of view, and light power at each corner of the field of view is equivalent to light power at a center of the field of view.