公开(公告)号：WO2021034409A1

公开(公告)日：2021-02-25

申请号：PCT/US2020/040040

申请日：2020-06-29

Applicant: APPLE INC.

Inventor： OGGIER, Thierry ,  HERRINGTON, Andrew T. ,  BUETTGEN, Bernhard

IPC: G01S7/4863 ,  G01S7/4865 ,  G01S17/36

Abstract: Apparatus (20) for optical sensing includes an illumination assembly (24), which directs optical radiation toward a target scene while modulating the optical radiation with a carrier wave having a predetermined carrier frequency. A detection assembly (26) includes an array (36) of sensing elements (40), which output respective signals in response to the optical radiation that is incident on the sensing elements during each of a plurality of detection intervals, which are synchronized with the carrier frequency at different, respective temporal phase angles, and objective optics (35), which form an image of the target scene on the array. Processing circuitry (22) processes the signals output by the sensing elements in order to compute depth coordinates of the points in the target scene by combining the signals output by respective groups of more than four of the sensing elements.