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公开(公告)号:US20170023188A1
公开(公告)日:2017-01-26
申请号:US15200099
申请日:2016-07-01
Inventor: KAZUMA MIMA , YOSHIHISA NAGASAKI , TAKAHIRO HAMADA , TAKASHI OHBAYASHI , YUKIHIKO SUGIO
CPC classification number: F21K9/64 , C09K11/02 , C09K11/7706 , F21V9/30 , F21Y2115/30 , H01L33/46 , H01L33/50 , H01S5/005 , H01S5/32341 , H05B33/20 , H05B33/22
Abstract: A light source includes a semiconductor light emitting device; and a wavelength converter. The wavelength converter includes: a substrate; a phosphor layer disposed on the substrate; and a light reflective layer disposed on the substrate so as to surround the phosphor layer. The phosphor layer includes phosphor particles and a first matrix material in which the phosphor particles are dispersed. The light reflective layer includes inorganic compound particles and a second matrix material in which the inorganic compound particles are dispersed. The inorganic compound particles have a refractive index higher than that of the first matrix material. The first matrix material has a refractive index higher than that of the phosphor particles. The phosphor particles have a refractive index higher than that of the second matrix material.
Abstract translation: 光源包括半导体发光器件; 和波长转换器。 波长转换器包括:基板; 设置在所述基板上的荧光体层; 以及设置在所述基板上以围绕所述荧光体层的光反射层。 磷光体层包括荧光体颗粒和其中分散有荧光体颗粒的第一基质材料。 光反射层包括无机化合物颗粒和分散无机化合物颗粒的第二基质材料。 无机化合物颗粒的折射率高于第一基质材料的折射率。 第一基质材料的折射率高于荧光体颗粒的折射率。 荧光体颗粒的折射率高于第二基体材料的折射率。
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公开(公告)号:US20170307163A1
公开(公告)日:2017-10-26
申请号:US15468183
申请日:2017-03-24
Inventor: YOSHIHISA NAGASAKI , TAKAHIRO HAMADA , KAZUMA MIMA , YUKIHIKO SUGIO
CPC classification number: F21S48/1145 , B60Q1/04 , C09K11/02 , C09K11/025 , C09K11/7734 , C09K11/7774 , F21S41/14 , F21S41/16 , F21S41/25 , F21S45/47 , H01L33/504 , H01L33/507 , H01L33/508 , H01S5/005
Abstract: A wavelength conversion member, comprises: a substrate; a first wavelength conversion layer on the substrate, the first wavelength conversion layer containing a first phosphor and a first matrix; and a second wavelength conversion layer containing a second phosphor, first inorganic particles, and a second matrix. The first phosphor and the second phosphor convert at least part of the excitation light incident on the second main surface into first light having longer wavelengths than the excitation light. The first light is emitted from the second main surface of the second wavelength conversion layer. A volume Vp1 of the first phosphor, a volume Vw1 of the first wavelength conversion layer, a volume Vp2 of the second phosphor, and a volume Vw2 of the second wavelength conversion layer satisfy Vp1/Vw1>Vp2/Vw2.
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公开(公告)号:US20200176644A1
公开(公告)日:2020-06-04
申请号:US16637919
申请日:2018-09-11
Inventor: YOSHIHISA NAGASAKI , TAKASHI OHBAYASHI , TAKAHIRO HAMADA , YUKIHIKO SUGIO
IPC: H01L33/50 , G02B5/20 , C09K11/54 , C09K11/06 , F21V9/08 , F21V8/00 , G02F1/017 , B82Y20/00 , B82Y30/00
Abstract: Provided is a wavelength conversion member having excellent heat dissipation properties. A wavelength conversion member according to the present disclosure includes wavelength conversion particles each including a fluorescent substance and a first matrix surrounding the fluorescent substance; and a second matrix having a thermal conductivity higher than a thermal conductivity of the first matrix and surrounding the wavelength conversion particles. The fluorescent substance is, for example, at least one selected from the group consisting of a fluorescent substance containing a quantum dot, a fluorescent substance containing a metal complex, and an organic fluorescent substance. The first matrix includes, for example, at least one selected from the group consisting of a resin and glass. The second matrix includes, for example, an inorganic crystal. The inorganic crystal is, for example, a zinc oxide crystal.
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公开(公告)号:US20170023199A1
公开(公告)日:2017-01-26
申请号:US15203614
申请日:2016-07-06
Inventor: TAKAHIRO HAMADA , KAZUMA MIMA , YUKIHIKO SUGIO , YOSHIHISA NAGASAKI
IPC: F21S8/10
CPC classification number: G02F1/3551 , F21K9/64 , F21S41/14 , F21S41/285 , G02F1/3619 , H01L33/501 , H01L2933/0041 , H01L2933/0075
Abstract: A wavelength converter comprises: phosphor particles; and a matrix that is located between the phosphor particles and comprises zinc oxide crystallites. Pores are included in at least one of the zinc oxide crystallites.
Abstract translation: 波长转换器包括:荧光体颗粒; 以及位于荧光体颗粒之间并包含氧化锌微晶的基体。 至少一种氧化锌微晶中包含孔。
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