Title:
LAMP
Document Type and Number:
WIPO Patent Application WO/2023/276774
Kind Code:
A1
Abstract:
A light-emitting device (100) (lamp) comprises: a phosphor substrate (30) on which a phosphor layer (36) is provided on the substrate surface; a first light-emitting unit (20A) that is provided on the phosphor substrate (30), and that outputs light for which the peak wavelength is a first wavelength; and a second light-emitting unit (20B) that is provided on the phosphor substrate (30) and that outputs light for which the peak wavelength is a second wavelength that is different from the first wavelength. The phosphor layer (36) contains a phosphor that is provided separately from the first light-emitting unit (20A) and the second light-emitting unit (20B) at least around the first light-emitting unit (20A) and the second light-emitting unit (20B), for which the light-emitting peak wavelength is in the visible light region when light of the first wavelength and light of the second wavelength are emitted as excitation light.
More Like This:
Inventors:
KONISHI MASAHIRO (JP)
Application Number:
PCT/JP2022/024659
Publication Date:
January 05, 2023
Filing Date:
June 21, 2022
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
F21V23/00; F21K9/23; F21V9/30; H01L33/00; H01L33/50; H05B45/20; H05B45/325; H05B47/16
Foreign References:
| JP2020107708A | 2020-07-09 | |||
| JP2015176967A | 2015-10-05 | |||
| JP2012064471A | 2012-03-29 |
Attorney, Agent or Firm:
HAYAMI Shinji (JP)
Download PDF: