公开(公告)号：US10863597B1

公开(公告)日：2020-12-08

申请号：US16830587

申请日：2020-03-26

Applicant: TRIPLE WIN TECHNOLOGY(SHENZHEN) CO. LTD.

Inventor： Meng-Qiu Li ,  Gang-Jia Li ,  Ying-Quan Zhao ,  Yen-Sheng Lin

IPC: H05B45/12 ,  F21V8/00

Abstract: A surface light source device and system for monitoring uniformity of brightness of the device are disclosed, the device includes a light source unit; a light guide plate, and at least one light uniformity plate. The light guide plate includes a light incident surface and a light emitting surface, the light incident surface is disposed in a light emitting direction of the light source unit; and the light incident surface is disposed in a light emitting direction of the light source unit. The at least one light uniformity plate comprises a light receiving surface facing the light emitting surface, the light receiving surface is defined with a plurality of zones, and each zone is provided with a photosensitive element which senses and measures the brightness of light. A method of operating the monitoring system is also disclosed.