Title:
LIGHT-CONCENTRATING UNIT, LIGHT EMITTING DEVICE, AND LIGHT EMITTING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/123441
Kind Code:
A1
Abstract:
A light-concentrating unit, a light emitting device, and a light emitting system. The light-concentrating unit comprises a reflecting member (1) and a collimating lens (3). The reflecting member (1) is provided with a light inlet and a light outlet. A reflecting surface of the reflecting member (1) is a paraboloid of revolution. Part of incident light exits in a first direction after being reflected by the reflecting surface, and part of the incident light exits in the first direction after passing through the collimating lens (3). A symmetry axis of the paraboloid of revolution coincides with an optical axis of the collimating lens (3). Under the combined action of the collimating lens (3) and the reflecting surface, light emitted by a light source is concentrated and reflected to a predetermined position, so that the light concentration efficiency of the light-concentrating unit is improved.
Inventors:
ZHANG SHIYU (CN)
Application Number:
PCT/CN2021/143903
Publication Date:
July 06, 2023
Filing Date:
December 31, 2021
Export Citation:
Assignee:
GOERTEK OPTICAL TECH CO LTD (CN)
International Classes:
G02B3/02; F21V5/04
Domestic Patent References:
| WO2011091259A2 | 2011-07-28 |
Foreign References:
| CN102486292A | 2012-06-06 | |||
| CN103133992A | 2013-06-05 | |||
| CN207096678U | 2018-03-13 | |||
| CN102313246A | 2012-01-11 | |||
| CN113701065A | 2021-11-26 | |||
| KR100875471B1 | 2008-12-22 |
Other References:
ZHANG QIAOSONG, XU CHUNYUN, CHENG HAOBO, TAM HON YUEN : "Freeform Surface Design for a LED Based Collimating Lens", IMAGING SCIENCE AND PHOTOCHEMISTRY, vol. 34, no. 1, 1 January 2016 (2016-01-01), pages 36 - 42, XP093074084, DOI: 10.7517/j.issn.1674-0475.2016.01.036
FAN, LUQING ET AL.: "TIR Collimating Lens Design Based on Freeform Surface", JOURNAL OF APPLIED OPTICS, vol. 34, no. 2, 31 March 2013 (2013-03-31), pages 325 - 329, XP009547244, ISSN: 1002-2082
"Master's Thesis", 1 April 2012, UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY, CN, article RUI, DAWEI: "Secondary Optical Design of LED Miniature Projection Light Source", pages: 1 - 74, XP009546875
WANG, CHENG ET AL.: "High Beam Design of Headlight Based on LED Light Source", CHINA LIGHT & LIGHTING, no. 8, 31 August 2018 (2018-08-31), pages 9 - 11, XP009547245, ISSN: 1002-6150
CHEN CHEN, ZHANG XIAOHUI: "Design of optical system for collimating the light of an LED uniformly", JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A, vol. 31, no. 5, 1 May 2014 (2014-05-01), pages 1118 - 1125, XP093074091, ISSN: 1084-7529, DOI: 10.1364/JOSAA.31.001118
FAN, LUQING ET AL.: "TIR Collimating Lens Design Based on Freeform Surface", JOURNAL OF APPLIED OPTICS, vol. 34, no. 2, 31 March 2013 (2013-03-31), pages 325 - 329, XP009547244, ISSN: 1002-2082
"Master's Thesis", 1 April 2012, UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY, CN, article RUI, DAWEI: "Secondary Optical Design of LED Miniature Projection Light Source", pages: 1 - 74, XP009546875
WANG, CHENG ET AL.: "High Beam Design of Headlight Based on LED Light Source", CHINA LIGHT & LIGHTING, no. 8, 31 August 2018 (2018-08-31), pages 9 - 11, XP009547245, ISSN: 1002-6150
CHEN CHEN, ZHANG XIAOHUI: "Design of optical system for collimating the light of an LED uniformly", JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A, vol. 31, no. 5, 1 May 2014 (2014-05-01), pages 1118 - 1125, XP093074091, ISSN: 1084-7529, DOI: 10.1364/JOSAA.31.001118
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
Download PDF: