Title:
ILLUMINATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/019753
Kind Code:
A1
Abstract:
Disclosed is an illumination apparatus, comprising: an excited light source for emitting excited light having a first wavelength distribution; and a light conversion apparatus, comprising: a light guide, the light guide comprising a first end, a second end opposite the first end, and a first face and a second face connected to the first end and the second end, wherein the first end is provided with a light incident face of the light conversion apparatus, and the first face constitutes a light emergent face of the light conversion apparatus; a reflective diffuser, arranged at the second end of the light guide and used for diffusing the excited light and reflecting same back to the interior of the light guide; and a wavelength converter, arranged adjacent to the second face of the light guide and used for converting the excited light into excited light having a second wavelength distribution, and reflecting the excited light back to the interior of the light guide so as to enable the excited light to be emitted from the first face of the light guide. By means of the present invention, the uniformity of light emitted by the illumination apparatus is improved, and the problems of heat concentration and conversion efficiency reduction caused by an excited light source with an ultra-high power density directly exciting a wavelength converter are avoided.
Inventors:
HU FEI (CN)
XU MENGMENG (CN)
ZHANG XIANPENG (CN)
LI YI (CN)
XU MENGMENG (CN)
ZHANG XIANPENG (CN)
LI YI (CN)
Application Number:
PCT/CN2019/081649
Publication Date:
January 30, 2020
Filing Date:
April 08, 2019
Export Citation:
Assignee:
YLX INC (CN)
International Classes:
F21K9/61; F21K9/64
Domestic Patent References:
| WO2009040725A2 | 2009-04-02 |
Foreign References:
| CN102644861A | 2012-08-22 | |||
| CN102644861A | 2012-08-22 | |||
| CN206515600U | 2017-09-22 | |||
| CN102182981A | 2011-09-14 |
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