DEPTH SENSING USING A TIME OF FLIGHT SYSTEM INCLUDING A SCANNING BEAM IN COMBINATION WITH A SINGLE PHOTON AVALANCHE DIODE ARRAY

A depth camera assembly (DCA) includes a light generator emitting a beam of light into a local area and a detector. The detector captures light from the beam reflected by objects in the local area to a portion of an array of pixels that each include a single photon avalanche diode (SPAD). The location of the portion of the array is based in part on the angle of the beam emitted from the projector. The DCA identifies a set of pixels of the array corresponding to the portion and selectively retrieves current generated from the reflected light by the pixels in the portion of the array without retrieving current generated by pixels in other portions of the array.