Title:
POLARIZATION LIGHT SOURCE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2024/065695
Kind Code:
A1
Abstract:
A polarization light source apparatus includes a transparent wavelength conversion plate (10, 101, 201, 301, 401), a collimating lens set (20, 103, 203, 303,403), a quarter-wave plate (30, 104, 204, 304, 404) and a reflective polarizing beam splitter (40, 105, 205, 305, 405) along an optical path. The transparent wavelength conversion plate (10, 101, 201, 301, 401) emits an excited light (12, 113, 213, 313, 413) upon receiving an excitation light (11A, 11B, 112, 212, 312, 412). The slow axis of the quarter-wave plate (30, 104, 204, 304, 404) has an approximately 45° angle with the transmission axis of the reflective polarizing beam splitter (40, 105, 205, 305, 405). The excitation light (11A, 11B, 112, 212, 312, 412) can shed onto the transparent wavelength conversion plate (10, 101, 201, 301, 401) from a side proximal or distal to the collimating lens set (20, 103, 203, 303,403). The apparatus further includes a reflective film layer (50, 101a, 201a) and a dichroic mirror (107, 207) in the proximal case, or includes a dichroic film layer (311a, 411a) in the distal case. The transparent wavelength conversion plate (10, 101, 201, 301, 401) optionally includes at least two portions (201M, 201N), which can be adjustably moved to be alternately arranged in the optical path such that the apparatus can alternately generate a different output light.
Inventors:
LIU ZHIGANG (CN)
ZHANG TAO (CN)
ZHANG TAO (CN)
Application Number:
PCT/CN2022/123326
Publication Date:
April 04, 2024
Filing Date:
September 30, 2022
Export Citation:
Assignee:
BEIJING ASU TECH CO LTD (CN)
International Classes:
G03B21/20; G02B27/28
Foreign References:
| CN102722074A | 2012-10-10 | |||
| CN102289077A | 2011-12-21 | |||
| JP2012008303A | 2012-01-12 | |||
| CN101836160A | 2010-09-15 | |||
| JP2022084619A | 2022-06-07 |
Attorney, Agent or Firm:
PATENTSINO IP FIRM (CN)
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