Title:
FLUORESCENCE CONVERSION ASSEMBLY, LASER LIGHT SOURCE DEVICE, AND LASER PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/042672
Kind Code:
A1
Abstract:
A fluorescence conversion assembly (100, T), a laser light source device, and a laser projection system, the assembly comprising: a fluorescence light guide component (12). Fluorescent crystals (121) used in the fluorescence light guide component (12) are a mono-crystalline fluorescent material. As pure crystals, the fluorescence light guide component is capable of enduring a higher temperature and receiving higher-energy laser light emitted by a laser array (200, 201) without degradation of fluorescence conversion efficiency. A higher transmittance is achieved when laser light is incident on the mono-crystalline fluorescent material, and the laser light is substantially free from scattering in the incident direction of the laser light, thereby realizing low optical loss and a more direct laser path, and effectively improving the fluorescence excitation efficiency. A full-band reflective film layer (122) is coated on a surface of the fluorescent crystals (121), so as to enable fluorescent light of different angles excited by the laser light to be reflected and transmitted within the fluorescence light guide component (12) with high efficiency, and to provide a light homogenization effect.
Inventors:
ZHANG YONG (CN)
GAO DI (CN)
GAO DI (CN)
Application Number:
PCT/CN2019/087212
Publication Date:
March 05, 2020
Filing Date:
May 16, 2019
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20; F21V13/00
Foreign References:
| CN105301880A | 2016-02-03 | |||
| CN103186024A | 2013-07-03 | |||
| CN104373899A | 2015-02-25 | |||
| CN106681094A | 2017-05-17 | |||
| CN107065411A | 2017-08-18 | |||
| US20090067453A1 | 2009-03-12 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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