Title:
LIGHT SOURCE DEVICE, AND ANOMALY DETERMINATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/132162
Kind Code:
A1
Abstract:
The present disclosure addresses the problem of providing: a light source device capable of improving the accuracy in determining anomaly in a wavelength conversion member; and an anomaly determination system. This light source device (4) comprises: a first light source (41); a wavelength conversion member (43); a second light source (42); and an optical sensor (44). The first light source (41) emits first light (L11). The wavelength conversion member (43) has: a first surface (431) through which the first light (L11) enters; and a second surface (432) that emits mixed light (L10) including the first light (L11) and wavelength-converted light (L12) obtained by subjecting the first light (L11) to a wavelength conversion process. The second light source (42) emits second light (L2) having a detection wavelength that is different from the excitation wavelength and fluorescent wavelength of the wavelength conversion member (43). The optical sensor (44) has a peak sensitivity at the detection wavelength. The optical sensor (44) also receives the second light (L2) reflected from the wavelength conversion member (43).
Inventors:
MOTEGI SHOGO
HAYASHI SHINTARO
YAGI FUMIYA
TAKENAKA TOSHIAKI
HAYASHI SHINTARO
YAGI FUMIYA
TAKENAKA TOSHIAKI
Application Number:
PCT/JP2022/044050
Publication Date:
July 13, 2023
Filing Date:
November 29, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H05B47/11; H05B45/10
Domestic Patent References:
| WO2017138412A1 | 2017-08-17 | |||
| WO2015181913A1 | 2015-12-03 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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