公开(公告)号：US20190324593A1

公开(公告)日：2019-10-24

申请号：US16373116

申请日：2019-04-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sohyun CHUNG ,  Yongjin LEE ,  Younghyun KIM ,  lnho YUN

IPC: G06F3/042 ,  G06F1/16 ,  H04N5/225

Abstract: An electronic device is provided. The electronic device includes a housing that includes a sensing surface, a light emitting unit that outputs a light through the sensing surface, a light receiving unit that collects a reflection light reflected from an external object in contact with the sensing surface, after the light is output from the light emitting unit, and a first Fresnel lens that is disposed between the light receiving unit and the sensing surface. A first surface of the first Fresnel lens total reflects the reflection light introduced in a direction perpendicular to the sensing surface, and a second surface of the first Fresnel lens refracts the total reflected light so as to be introduced to the light receiving unit.