Title:
FLUORESCENT MEMBER, LIGHT SOURCE DEVICE AND PROJECTION DEVICE
Document Type and Number:
Japanese Patent JP2022045766
Kind Code:
A
Abstract:
To provide a fluorescent member with improved light utilization efficiency, a light source device and a projection device.SOLUTION: A fluorescent member has: a fluorescent body (321) that emits a first fluorescence L2 containing a first wavelength component (L21) and a second wavelength component (L22) having a shorter wavelength than the first wavelength component (L21) with irradiation of excitation light L1; and a dichroic filter 322 that transmits the first wavelength component (L21) as light source light, and reflects the second wavelength component (L22) toward the fluorescent body (321) side as secondary excitation light.SELECTED DRAWING: Figure 4
Inventors:
OGAWA MASAHIRO
Application Number:
JP2020151528A
Publication Date:
March 22, 2022
Filing Date:
September 09, 2020
Export Citation:
Assignee:
CASIO COMPUTER CO LTD
International Classes:
G03B21/14; F21S2/00; F21V7/28; F21V7/30; G03B21/00; H04N5/74
Domestic Patent References:
| JP2018189951A | 2018-11-29 | |||
| JP2016161709A | 2016-09-05 |
Foreign References:
| CN210721000U | 2020-06-09 |
Attorney, Agent or Firm:
Cosmo International Patent Office
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