Title:
LIGHT SOURCE MODULE AND PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2022/254831
Kind Code:
A1
Abstract:
A light source module according to one embodiment of the present disclosure comprises: a light source unit that emits excitation light; a wavelength conversion unit that has a phosphor region which absorbs the excitation light and which emits, as first light, fluorescence containing light in a wavelength band different from that of the excitation light, and a reflective region which reflects the excitation light and which emits the excitation light as second light; a wavelength-selection polarization-separation element that separates light in a predetermined wavelength band, on the basis of the polarization direction; and a phase difference element that is selectively disposed in the reflective region and that rotates the polarization direction of the excitation light.
Inventors:
HOMMA KEISUKE (JP)
Application Number:
PCT/JP2022/008060
Publication Date:
December 08, 2022
Filing Date:
February 25, 2022
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G03B21/00; F21S2/00; F21V7/22; F21V9/35; F21V9/40; G03B21/14; H04N9/31
Domestic Patent References:
| WO2015111145A1 | 2015-07-30 |
Foreign References:
| JP2019168651A | 2019-10-03 | |||
| JP2015227916A | 2015-12-17 | |||
| JP2021012375A | 2021-02-04 | |||
| JP2017044857A | 2017-03-02 | |||
| JP2020013160A | 2020-01-23 |
Attorney, Agent or Firm:
TSUBASA PATENT PROFESSIONAL CORPORATION (JP)
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