公开(公告)号：US20250098968A1

公开(公告)日：2025-03-27

申请号：US18473429

申请日：2023-09-25

Applicant: PIXART IMAGING INC.

Inventor： Ren-Hau GU ,  Hsiu-Ling YEH

IPC: A61B5/024 ,  A61B5/00

Abstract: There is provided a physiological detection device for detecting physiological signals via a skin surface and including a first light source, a second light source, a first light sensor, a second light sensor and a processor. The first light source emits light via an optical element that causes the first light sensor and the second light sensor to receive different percentages of light energy of the first light source. The first light sensor and the second light sensor receive the same percentage of light energy of the second light source. The processor adjusts emission intensity of the first light source according to an intensity difference between two light energies received by the first and second light sensors as well as an intensity variation of light energy received by the first light sensor to alleviate motion artifacts in the physiological signals.