Title:
LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/084935
Kind Code:
A1
Abstract:
This lighting device comprises a housing, a light source, an aspheric lens, a wavelength conversion member, and a wavelength separation filter. The housing has a first opening that is open to a lighting space. The light source emits excitation light into the housing. The aspheric lens is positioned inside the housing and flattens the light intensity distribution of the excitation light received from the light source. The wavelength conversion member is positioned inside the housing and emits, on the basis of the excitation light, fluorescence having a spectrum different from that of the excitation light as illuminating light. The wavelength separation filter is positioned inside the housing, guides the excitation light from the aspheric lens to the wavelength conversion member, and guides the fluorescence from the wavelength conversion member to the first opening.
Inventors:
UENO ARATA (JP)
TAKEUCHI ERI (JP)
TAKEUCHI ERI (JP)
Application Number:
PCT/JP2023/035871
Publication Date:
April 25, 2024
Filing Date:
October 02, 2023
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
F21S2/00; F21V7/28; F21V9/20; F21V9/38; F21Y115/30
Foreign References:
| JP2020154032A | 2020-09-24 | |||
| JP2020118947A | 2020-08-06 | |||
| JP2021125365A | 2021-08-30 | |||
| JP2022038680A | 2022-03-10 | |||
| JP2021086135A | 2021-06-03 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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