PROJECTION LIGHT SOURCE AND PROJECTION SYSTEM THEREOF

Title:

PROJECTION LIGHT SOURCE AND PROJECTION SYSTEM THEREOF

Document Type and Number:

WIPO Patent Application WO/2019/179209

Kind Code:

A1

Abstract:

A projection light source (1) and a projection system thereof, comprising: a blue laser light source (11), a red laser light source (12), a rotating fluorescent color wheel (21), a collecting lens (31), a first beam splitter (41), and a red laser mirror (51); a working surface (P1) of the rotating fluorescent color wheel (21) is adjacently provided with an annular fluorescent layer (212) and a circular reflective diffusion layer (211); the blue laser light source (11), the red laser light source (12), the collecting lens (31), the first beam splitter (41), and the red laser mirror (51) are all provided at a side of the working surface (P1) of the rotating fluorescent color wheel (21); the annular fluorescent layer (212) of the rotating fluorescent color wheel (21), the collecting lens (31), the first beam splitter (41) and the blue laser light source (11) are located at a first reference line (S1); the red laser mirror (51) and the first beam splitter (41) are located at a second reference line (S2); the red laser light source (12) is arranged off-axis, and a red laser beam emitted thereby forms a first off-axis angle a with the first reference line (S1), thereby raising the color gamut of the projection light source (1) without affecting the brightness of the projection light source (1), simultaneously causing the structure of the projection light source (1) to be compact.

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Inventors:

GAO ZHIQIANG (CN)
YEUNG STEVE (CN)
LAI HONGJI (CN)
LIN QINGYUN (CN)

Application Number:

PCT/CN2019/070264

Publication Date:

September 26, 2019

Filing Date:

January 03, 2019

Export Citation:

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Assignee:

IVIEW DISPLAYS SHENZHEN CO LTD (CN)

International Classes:

G03B21/20

Foreign References:

CN108663881A	2018-10-16
CN104765238A	2015-07-08
CN206610072U	2017-11-03
CN107797372A	2018-03-13
CN102540678A	2012-07-04
KR20120103072A	2012-09-19

Attorney, Agent or Firm:

LIUJIA CHINA IP LAW OFFICE (CN)

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