Title:
LIGHT SOURCE DEVICE AND PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/000673
Kind Code:
A1
Abstract:
Provided is a light source device, comprising an excitation light source (10) for generating excitation light, a light condensing device (13), and a fluorescent cavity (14). The fluorescent cavity (14) comprises a chamber (141) and a fluorescent layer (145), the chamber (141) having a light window (142) for allowing light to enter and exit and a bottom wall (143) opposite to the light window (142). The fluorescent layer (145) is provided on the surface of the bottom wall (143). The excitation light is concentrated by the light condensing device (13), and then is incident from the light window (142) to the surface of the fluorescent layer (145) to form a light spot and excite the fluorescent layer (145) to generate a laser. The area of the light window (142) is smaller than the area of the light spot, and the laser can be emitted from the light window (142). The light source device can improve excitation efficiency and achieve an efficient illumination or projection system. Also provided is a projection system.
Inventors:
HU FEI (CN)
GUO ZUQIANG (CN)
DU PENG (CN)
LI YI (CN)
GUO ZUQIANG (CN)
DU PENG (CN)
LI YI (CN)
Application Number:
PCT/CN2017/103437
Publication Date:
January 03, 2019
Filing Date:
September 26, 2017
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20
Foreign References:
| CN206946177U | 2018-01-30 | |||
| CN102608854A | 2012-07-25 | |||
| CN105527787A | 2016-04-27 | |||
| CN103953856A | 2014-07-30 | |||
| JP2015043109A | 2015-03-05 |
Other References:
See also references of EP 3647868A4
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