Invention Grant
- Patent Title: Sintered phosphor, light emitting device, illumination device, vehicle headlamp, and method for manufacturing sintered phosphor
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Application No.: US15656537Application Date: 2017-07-21
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Publication No.: US10753574B2Publication Date: 2020-08-25
- Inventor: Harumi Asami , Yukihiro Miyamoto , Minoru Soma , Tadahiro Katsumoto , Kentarou Horibe
- Applicant: Mitsubishi Chemical Corporation
- Applicant Address: JP Chiyoda-ku
- Assignee: Mitsubishi Chemical Corporation
- Current Assignee: Mitsubishi Chemical Corporation
- Current Assignee Address: JP Chiyoda-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5b8ec0b2 com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@47ac147b
- Main IPC: F21V9/30
- IPC: F21V9/30 ; C09K11/02 ; F21V3/04 ; H01L33/50 ; C09K11/77 ; F21S41/141 ; F21S41/20 ; B60Q1/04 ; F21Y115/10 ; C09K11/08

Abstract:
Provided is a sintered phosphor-composite for an LED, having high heat resistance, high thermal conductivity, high luminance, and high conversion efficacy. In addition, there are provided: a light-emitting apparatus which uses the sintered phosphor-composite; and an illumination apparatus and a vehicular headlamp which use the light-emitting apparatus. The sintered phosphor-composite includes a nitride phosphor and a fluoride inorganic binder. The sintered phosphor-composite preferably has an internal quantum efficiency of 60% or more when excited by blue light having a wavelength of 450 nm. Further, the sintered phosphor-composite preferably has a transmittance of 20% or more at a wavelength of 700 nm.
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