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Patent Searching and Data


Title:
LASER PROJECTION LIGHT SOURCE AND LASER PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/121408
Kind Code:
A1
Abstract:
A laser projection light source and a laser projection device. The laser projection light source comprises a housing (200), a laser (1) borne on the housing (200) and used for emitting first laser light (11), and a light combining assembly (2), a first lens assembly (3), and a fluorescent wheel (4) which are all provided in the housing (200). The first lens assembly (3) and the fluorescent wheel (4) are both disposed on an optical path of the first laser light (11), and the first lens assembly (3) is located on the side of the fluorescent wheel (4) close to the laser (1). The fluorescence wheel (4) is provided with a fluorescence reflection region (41), the fluorescence reflection region (41) is used for reflecting fluorescence (42) generated by excitation of the first laser light (11) to the light combining assembly (2). The light combining assembly (2) is located on an optical path of second laser light (12) formed after the first laser light (11) irradiates the fluorescent wheel (4), and used for combining the second laser light (12) and the fluorescence (42) and outputting same. An optical axis of the first lens assembly (3) and an optical axis of the first laser light (11) are arranged heteroaxially. The laser projection light source solves the problem of low overall transmittance of the fluorescence (42) of the first lens assembly (3).

Inventors:
ZHAO YUN (CN)
Application Number:
PCT/CN2020/137754
Publication Date:
June 24, 2021
Filing Date:
December 18, 2020
Export Citation:
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Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20
Foreign References:
CN111025833A2020-04-17
CN211427028U2020-09-04
CN212112104U2020-12-08
CN109557750A2019-04-02
CN103453448A2013-12-18
CN108572497A2018-09-25
CN108931880A2018-12-04
CN109557754A2019-04-02
US20160313633A12016-10-27
CN208537888U2019-02-22
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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