公开(公告)号：US20180375513A1

公开(公告)日：2018-12-27

申请号：US15969786

申请日：2018-05-03

Applicant: SensorTek technology Corp.

Inventor： Kun-Yang Li ,  Meng-Yong Lin ,  Sheng-Chun Chen

IPC: H03K17/945 ,  G01S17/02 ,  H03K17/968

Abstract: A proximity sensor for a non-aperture mechanism includes a control circuit for generating a control signal; a first light-emitting element for emitting a first light source according to the control signal of the control circuit; a second light-emitting element for emitting a second light source according to the control signal of the control circuit; and a light sensing element coupled to the control circuit, for sensing the first light source and the second light source reflected by an object, and determining a distance between the proximity sensor and the object according to light intensities of the reflected first light source and the reflected sensed second light source; wherein the light sensing element and the first light-emitting element have a first distance therebetween, the light sensing element and the second light-emitting element have a second distance therebetween, and the second distance is greater than the first distance.