公开(公告)号：US20220091269A1

公开(公告)日：2022-03-24

申请号：US17464698

申请日：2021-09-02

Applicant: APPLE INC.

Inventor： Bernhard Buettgen ,  Gregory A. Cohoon ,  Tomas G. Van den Hauwe

IPC: G01S17/894 ,  G01S17/32 ,  G01S17/10 ,  G01S7/48

Abstract: Apparatus for optical sensing includes an illumination assembly, which directs a first array of beams of optical radiation toward different, respective areas in a target scene while temporally modulating the beams with a carrier wave having a carrier frequency. A detection assembly receives the optical radiation that is reflected from the target scene, and includes a second array of sensing elements, which output respective signals in response to the optical radiation that is incident on the sensing elements during one or more detection intervals, which are synchronized with the carrier frequency, and objective optics, which form an image of the target scene on the second array. Processing circuitry drives the illumination assembly to apply a spatial modulation pattern to the first array of beams and processes the signals output by the sensing elements responsively to the spatial modulation pattern in order to generate a depth map of the target scene.