Title:
発光装置
Document Type and Number:
Japanese Patent JP7022914
Kind Code:
B2
Abstract:
A light emitting device includes: a solid-state light emitting element that emits excitation light having a maximum intensity value within a wavelength range of 440 nm or more and less than 470 nm; and a wavelength conversion member composed by combining a first wavelength converter, which includes a first phosphor activated by Ce3+, and a second wavelength converter, which includes a second phosphor activated by Ce3+, with each other. The first phosphor emits first fluorescence having a maximum intensity value within a wavelength range of 470 nm or more and less than 530 nm, and the second phosphor emits second fluorescence having a maximum intensity value within a wavelength range of 580 nm or more and less than 660 nm. The first wavelength converter has a dispersed state in which particles of the first phosphor are not in contact with one another.
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Inventors:
Takeshi Abe
Shozo Oshio
Shozo Oshio
Application Number:
JP2019539074A
Publication Date:
February 21, 2022
Filing Date:
July 25, 2018
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
H01S5/02; C09K11/08; C09K11/59; C09K11/64; G02B5/20
Domestic Patent References:
| JP2017521867A | ||||
| JP2007126536A | ||||
| JP2015130459A | ||||
| JP2014207436A | ||||
| JP2015503180A |
Foreign References:
| WO2016092743A1 | ||||
| WO2014065358A1 | ||||
| US20070262288 | ||||
| US20120091494 | ||||
| WO2013190778A1 |
Attorney, Agent or Firm:
Masakazu Ito
Takayoshi Matsumoto
Satoru Hosokawa
Taishi Mori
Takayoshi Matsumoto
Satoru Hosokawa
Taishi Mori
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