LIGHT EMITTING DEVICE AND LIGHTING FIXTURE PROVIDED WITH SAME

Title:

LIGHT EMITTING DEVICE AND LIGHTING FIXTURE PROVIDED WITH SAME

Document Type and Number:

WIPO Patent Application WO/2021/192743

Kind Code:

A1

Abstract:

The present invention provides: a light emitting device which is capable of achieving excellent color rendering properties and high emission efficiency; and a lighting fixture which is provided with this light emitting device. A light emitting device which comprises: a light emitting element that has a light emission peak wavelength within the range of from 430 nm to 470 nm; and a fluorescent member which contains two or more rare earth aluminate phosphors that include at least one phosphor selected from the group consisting of a first phosphor having a composition represented by formula (I) (Y3(Al, Ga)5O12:Ce), a second phosphor having a composition represented by formula (II) (Lu3Al5O12:Ce) and a third phosphor having a composition represented by formula (III) Y3Al5O12:Ce), a fourth phosphor having a composition represented by formula (IV) (A2(M11-pMn4+ pF6)) and a fifth phosphor having a composition represented by formula (V) ((Sr, Ca)AlSiN3:Eu).

Inventors:

BANDO ATSUSHI (JP)
NISHIDA KEIGO (JP)

Application Number:

PCT/JP2021/005874

Publication Date:

September 30, 2021

Filing Date:

February 17, 2021

Export Citation:

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Assignee:

NICHIA CORP (JP)

International Classes:

H01L33/50; C09K11/08; C09K11/61; C09K11/64; C09K11/80

Foreign References:

JP2016072614A	2016-05-09
JP2017117875A	2017-06-29
JP2016207824A	2016-12-08
JP2014197536A	2014-10-16
JP2016188263A	2016-11-04
US20160372638A1	2016-12-22
JP2003535477A	2003-11-25
JP2003535478A	2003-11-25
JP2014202266A	2014-10-27

Other References: