Lidar assembly with stacked beam-steering device

Abstract

A LiDAR system includes a light detector having a field of view, a beam-steering device, and a light emitter aimed at the beam-steering device. The beam-steering device is aimed to emit light from the light emitter into a field of illumination overlapping the field of view. The beam-steering device includes two beam-steering stages each having a polarization grating. The polarization gratings are designed to diffract light from the light emitter based on the polarization state of the light received by the polarization grating. The beam-steering device includes a switchable polarization selector designed to change the polarization state of the light to move the field of illumination relative to the field of view.

Dependencies are inferred from the claim text.