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Title:
LIGHT SOURCE SYSTEMS AND PROJECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/200980
Kind Code:
A1
Abstract:
Light source systems (100, 200, 300, 400, 500) and a projection apparatus. The light source systems (100, 200, 300, 400, 500) comprise: an excitation light source (110); a supplementary light source (120); wavelength conversion devices (150, 250, 350, 450, 550), configured to generate fluorescent light under excitation of a portion of a first color laser; first guiding devices (140, 540), configured to guide the other portion of the first color laser and the supplementary light to be combined to obtain mixed light, and comprising a convergent lens (149), the mixed light being emitted by means of convergence of the convergent lens (149); and second guiding devices (160, 560), the second guiding devices (160, 560) comprising: light-splitting optical filters (161, 361, 561), provided between the excitation light source (110) and the wavelength conversion devices (150, 250, 350, 450, 550), and configured to guide the first color laser to be irradiated to the wavelength conversion devices (150, 250, 350, 450, 550), and reflect the fluorescent light; and first optical lenses (166, 566), provided at an off-focus position where the light-splitting optical filters (161, 361, 561) emit the fluorescent light, the mixed light emitted by the first guiding devices (140, 540) gathering near the first optical lenses (166, 566), and the fluorescent light and the mixed light being emitted after being combined at the first optical lenses (166, 566).

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Inventors:
GUO ZUQIANG (CN)
DU PENG (CN)
LI YI (CN)
Application Number:
PCT/CN2019/070527
Publication Date:
October 24, 2019
Filing Date:
January 05, 2019
Export Citation:
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Assignee:
APPOTRONICS CORP LTD (CN)
International Classes:
G03B21/00; G02B7/182; G03B21/14; G03B21/20
Domestic Patent References:
WO2018028240A12018-02-15
WO2012075947A12012-06-14
Foreign References:
CN104765240A2015-07-08
CN104765238A2015-07-08
CN103836542A2014-06-04
CN104880819A2015-09-02
JP2010256457A2010-11-11
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