公开(公告)号：EP4156515A1

公开(公告)日：2023-03-29

申请号：EP22196440.6

申请日：2022-09-20

Applicant: Apple Inc.

Inventor： CHEN, Tong ,  VAIL, Edward ,  WINKLER, Mark T. ,  GAO, Yongkang

IPC: H03K17/94

Abstract: An optical sensing system includes a transmitter side and a receiver side, and is configured to be positioned below a display of an electronic device. The transmitter side includes a light emitter. The receiver side includes an array of photodiodes. The light emitter of the transmitter side and the array of photodiodes of the receiver side are optically coupled via a waveguide. As a result of this construction, the optical sensing system can be operated as an interferometric optical sensor.