公开(公告)号：US20220026545A1

公开(公告)日：2022-01-27

申请号：US16936777

申请日：2020-07-23

Applicant: PixArt Imaging Inc.

Inventor： Tso-Sheng TSAI ,  Yueh-Lin CHUNG ,  Shin-Lin WANG

IPC: G01S7/497 ,  G01S17/10 ,  G01S7/4865 ,  G01S7/481

Abstract: There is provided a time of flight sensor including a light source, a first pixel, a second pixel and a processor. The first pixel generates a first output signal without receiving reflected light from an external object illuminated by the light source. The second pixel generates a second output signal by receiving the reflected light from the external object illuminated by the light source. The processor calculates deviation compensation and deviation correction associated with temperature variation according to the first output signal to accordingly calibrate a distance calculated according to the second output signal.