公开(公告)号：US20240305238A1

公开(公告)日：2024-09-12

申请号：US18212835

申请日：2023-06-22

Applicant: National Taiwan Normal University

Inventor： Tun-Chien TENG ,  Yu-Wei HUANG

IPC: H02S20/22 ,  F21V8/00 ,  G02B26/08 ,  G02B27/14

CPC classification number: H02S20/22 ,  G02B6/0095 ,  G02B26/0816 ,  G02B27/142

Abstract: A shutter includes a plurality of light-guiding devices each of which includes a light collector and a beam expander. The light collector includes a light-guiding plate that has a first end portion and a second end portion opposite to the first end portion in a first direction, and a plurality of light-collecting members that are disposed on the first end portion and that are arranged in the first direction. Each of the light-collecting members has a curved surface that is adapted for reflecting light beams that travel into the light-collecting member so that the light beams travel into the light-guiding plate. The beam expander is disposed on the second end portion of the light-guiding plate. When the light beams travel into the light-guiding plate, the light-guiding plate is adapted for the light beams to reflect therein, and to travel through the second end portion into the beam expander.