Title:
LIGHT-EMITTING DEVICE AND RELATED PROJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/010467
Kind Code:
A1
Abstract:
A light-emitting device (51, 100, 200, 300, 400, 600) and a projection system (50, 60), comprising: a first light source (112, 212, 312, 412, 612), a wavelength conversion device (120, 220, 320, 420, 620), a second light source (114, 214, 314, 614, 614), a regulating device (134, 634) and a light-source control unit (136, 636). The wavelength conversion device (120, 220, 320, 420, 620) includes a first segment region (122); the first segmented region (122) carries a first-color fluorescent material and a second-color fluorescent material; the fluorescent materials are excited by a light ray of the first light source (112, 212, 312, 412, 612) to emit light. A first-color light emitted by the second light source (114, 214, 314, 614, 614) is combined with a first-color light generated by the wavelength conversion device (120, 220, 320, 420, 620). The light-source control unit (136, 636) controls driving currents of the first light source (112, 212, 312, 412, 612) and the second light source (114, 214, 314, 614, 614), so that actual color coordinates and brightness level of the first-color light emitted by the light-emitting device (51, 100, 200, 300, 400, 600) match with predetermined standard color coordinates and brightness level.
Inventors:
GUO ZUQIANG (CN)
CHEN HONGYUN (CN)
LI YI (CN)
CHEN HONGYUN (CN)
LI YI (CN)
Application Number:
PCT/CN2017/081438
Publication Date:
January 18, 2018
Filing Date:
April 21, 2017
Export Citation:
Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/20
Foreign References:
| CN102980062A | 2013-03-20 | |||
| CN101750856A | 2010-06-23 | |||
| CN1991571A | 2007-07-04 | |||
| CN205301793U | 2016-06-08 | |||
| CN104635408A | 2015-05-20 | |||
| CN105467733A | 2016-04-06 | |||
| US20140307231A1 | 2014-10-16 | |||
| US20080042578A1 | 2008-02-21 |
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