Title:
NON-COAXIAL PROJECTION LIGHT SOURCE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/220837
Kind Code:
A1
Abstract:
A non-coaxial projection light source system, comprising a light source (1), a fluorescent wheel (2), and a converging and shaping lens group (3) located therebetween. Exciting light emitted by the light source (1) is emitted to the converging and shaping lens group (3) in the direction inclined to the optical axis of the converging and shaping lens group (3) and then emitted to the fluorescent wheel (2), and radiation fluorescence generated on the fluorescent wheel (2) by means of excitation is emitted to the converging and shaping lens group (3) and then is outputted by converging to the direction different from an optical path direction of the exciting light. The non-coaxial projection light source system is simple and compact in structure, a dichroscope for light splitting is omitted, system components are effectively reduced, the system cost is reduced, the occupied space of the system is reduced, so that the system structure is more compact, the loss in the light transmission process is reduced, and the output brightness of the light source is improved.
Inventors:
ZHONG BO (CN)
XIAO SHI (CN)
YIN LEI (CN)
XIAO SHI (CN)
YIN LEI (CN)
Application Number:
PCT/CN2020/078544
Publication Date:
November 05, 2020
Filing Date:
March 10, 2020
Export Citation:
Assignee:
CHENGDU XGIMI TECH CO LTD (CN)
International Classes:
G02B21/20; G02B26/00
Foreign References:
| CN109960099A | 2019-07-02 | |||
| CN209674172U | 2019-11-22 | |||
| CN108646510A | 2018-10-12 | |||
| CN108803215A | 2018-11-13 | |||
| CN105388691A | 2016-03-09 | |||
| US20100309439A1 | 2010-12-09 |
Other References:
See also references of EP 3964876A4
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