公开(公告)号：US11629948B2

公开(公告)日：2023-04-18

申请号：US17167218

申请日：2021-02-04

Applicant: Apple Inc.

Inventor： Nathan Shou ,  Daryl I. Vulis ,  Tong Chen

IPC: G01B11/14 ,  G01B9/02015 ,  G01B9/02

Abstract: An optical proximity sensor includes an optical path extender that extends an optical path length of the optical proximity sensor without a corresponding extension of a geometric path length of the optical proximity sensor. The optical path extender may be a high-refractive index material positioned along the optical path through the optical proximity sensor. The optical path extender may include one or more redirection features configured to change a direction of the light traveling within the optical proximity sensor. The optical path extender may include a photonic component configured to simulate an extension of the geometric path within an optical proximity sensor by applying a momentum-dependent transfer function to the light traveling through it.

公开(公告)号：US20220244041A1

公开(公告)日：2022-08-04

申请号：US17167218

申请日：2021-02-04

Applicant: Apple Inc.

Inventor： Nathan Shou ,  Daryl I. Vulis ,  Tong Chen

IPC: G01B11/14 ,  G01B9/02

Abstract: An optical proximity sensor includes an optical path extender that extends an optical path length of the optical proximity sensor without a corresponding extension of a geometric path length of the optical proximity sensor. The optical path extender may be a high-refractive index material positioned along the optical path through the optical proximity sensor. The optical path extender may include one or more redirection features configured to change a direction of the light traveling within the optical proximity sensor. The optical path extender may include a photonic component configured to simulate an extension of the geometric path within an optical proximity sensor by applying a momentum-dependent transfer function to the light traveling through it.