公开(公告)号：US20250025059A1

公开(公告)日：2025-01-23

申请号：US18715193

申请日：2022-11-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hangfei Li ,  Xiaosong Wei ,  Wenqiang Xia ,  Hao Zhang

IPC: A61B5/024 ,  A61B5/00

Abstract: A heart detection module includes a light emitting component, a light receiving component, and a Fresnel film, where the light emitting component and the light receiving component are disposed in an optical isolation manner, the Fresnel film is located on a same side of the light emitting component and the light receiving component, and a light outlet surface of the light emitting component faces the Fresnel film. The Fresnel film has a light absorption medium, and in a direction perpendicular to the Fresnel film, the light absorption medium is located between the light emitting component and the light receiving component.