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公开(公告)号：US20210148547A1
公开(公告)日：2021-05-20
申请号：US17045390
申请日：2019-03-18
Inventor： Tatsuya OKUNO , Kazuyuki YAMAE
Abstract: An illumination device includes a housing including an opening portion, a wavelength converting component which is disposed inside the housing and radiates wavelength-converted light having a different wavelength from that of a laser beam after the laser beam enters the component, an optical film which covers the opening portion and has optical properties such that the transmittance for the wavelength-converted light is 80% or more and the transmittance for the laser beam at the peak wavelength is 80% or less of the transmittance for the wavelength-converted light at the peak wavelength, and a light diffusing structure which is disposed on at least part of the inner wall of the housing and diffusely reflects the laser beam reflected at least by the optical film.
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公开(公告)号：US20210048168A1
公开(公告)日：2021-02-18
申请号：US17047220
申请日：2019-04-10
Inventor： Tatsuya OKUNO , Takeshi ABE , Shozo OSHIO
Abstract: Alight emitting device (A) includes a laser light source (1) that emits laser light (100), a housing (2A) that includes a bottom wall (3) and a side wall, and a first wavelength converter (20) provided on the side wall, the first wavelength converter (20) containing a first phosphor. The bottom wall of the housing is irradiated with the laser light emitted from the laser light source, and the first phosphor is excited by diffused light of the laser light diffused by the bottom wall. With such a configuration, the light emitting device (A) improves color uniformity and chromaticity flexibility while increasing power density of output light.
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公开(公告)号：US20190341530A1
公开(公告)日：2019-11-07
申请号：US16472884
申请日：2017-10-18
Inventor： Tatsuya OKUNO , Masahiro NAKAMURA , Youshin LEE
Abstract: A wavelength converter includes: inorganic phosphor particles; translucent non-fluorescent light emitting inorganic particles; and an inorganic binder, wherein the inorganic phosphor particles and the translucent non-fluorescent light emitting inorganic particles are bound to each other by the inorganic binder, an average particle size of the translucent non-fluorescent light emitting inorganic particles is equal to or more than an average particle size of the inorganic phosphor particles, thermal conductivity of the translucent non-fluorescent light emitting inorganic particles is larger than thermal conductivity of the inorganic phosphor particles, a refractive index of the translucent non-fluorescent light emitting inorganic particles stays within a range of ±6% of a refractive index of the inorganic phosphor particles, and fluorescence is emitted upon receiving excitation light.
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公开(公告)号：US20220162850A1
公开(公告)日：2022-05-26
申请号：US17440989
申请日：2020-02-04
Inventor： Naoki KURIZOE , Natsuki SATO , Tatsuya OKUNO , Ryosuke SAWA , Tatsuro YOSHIOKA
Abstract: A water-repellent member includes a matrix part including an inorganic substance including at least one of a metal oxide or a metal hydroxide, and a water-repellent resin present in a dispersed state inside the matrix part. The water-repellent member has a porosity of 20% or less in a section of the matrix part. A building member and a wet room member each include the water-repellent member.
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公开(公告)号：US20210325022A1
公开(公告)日：2021-10-21
申请号：US17273194
申请日：2019-09-11
Inventor： Tatsuya OKUNO
Abstract: A wavelength conversion member converts a wavelength of laser light. The wavelength conversion member includes a substrate having reflectivity with respect to the laser light, and a phosphor layer including a phosphor for converting the laser light into light having a longer wavelength than that of the laser light, the phosphor layer being on the substrate. The phosphor layer includes a plurality of concave parts, each having a depth of 50% or more and 80% or less with respect to a film thickness of the phosphor layer and an opening width of 50 μm or more, on a surface of the phosphor layer, the surface irradiated with the laser light. A distance between adjacent concave parts of the plurality of concave parts is smaller than a spot diameter of the laser light to be emitted to the surface of the phosphor layer.
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Patent Agency Ranking
公开(公告)号：US20220186038A1
公开(公告)日：2022-06-16
申请号：US17439857
申请日：2020-02-04
Inventor： Naoki KURIZOE , Tatsuya OKUNO , Natsuki SATO
Abstract: A composite member includes a matrix part including an inorganic substance, and an organic dye present in a dispersed state inside the matrix part. The composite member has a porosity of 20% or less in a section of the matrix part. A construction member and a decoration member each include the composite member.
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公开(公告)号：US20190027656A1
公开(公告)日：2019-01-24
申请号：US16071906
申请日：2017-01-31
Inventor： Youshin LEE , Shozo OSHIO , Tatsuya OKUNO , Takeshi ABE , Masahiro NAKAMURA
CPC classification number: H01L33/502 , C09K11/08 , F21S2/00 , F21V9/30 , G02B5/20 , H01L33/16 , H01L33/50 , H01L33/58 , H01S5/022 , Y02B20/181
Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.
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公开(公告)号：US20200255729A1
公开(公告)日：2020-08-13
申请号：US15774552
申请日：2016-12-09
Inventor： Tatsuya OKUNO , Masahiro NAKAMURA , Youshin LEE , Shunpei FUJII
Abstract: A wavelength converter includes: a plurality of phosphor particles; and a binder layer that adheres the plurality of adjacent phosphor particles to one another, the binder layer being composed of a nanoparticle-adhered body in which a plurality of nanoparticles having an average particle size D50 of 1 nm or more and less than 100 nm are adhered to one another.
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公开(公告)号：US20190280166A1
公开(公告)日：2019-09-12
申请号：US16427243
申请日：2019-05-30
Inventor： Youshin LEE , Shozo OSHIO , Tatsuya OKUNO , Takeshi ABE , Masahiro NAKAMURA
Abstract: A light emitting device 1 includes: a substrate 30; and a phosphor layer 40 composed in such a manner that a large number of phosphor particles 60 are adhered onto a flat surface 32 of the substrate 30. At least one of the phosphor particles 60 is a polyhedral phosphor particle 65 that is monodispersed, is derived from a crystal structure of garnet and has facets, and a median particle size D50 of the polyhedral phosphor particle 65 is 30 μm or more and a maximum thickness of the phosphor layer 40 or less. It is preferable that at least one of the phosphor particles 60 adhered onto the flat surface 32 of the substrate 30 is the polyhedral phosphor particle 65 that is monodispersed, is derived from the crystal structure of the garnet, and has the facets.
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公开(公告)号：US20190169494A1
公开(公告)日：2019-06-06
申请号：US16092453
申请日：2017-04-10
Inventor： Masahiro NAKAMURA , Tatsuya OKUNO , Youshin LEE
Abstract: A wavelength conversion member includes: a substrate; and a wavelength converter that converts color of incident light, the wavelength converter being provided on a surface of the substrate. The wavelength converter has: inorganic phosphor particles which convert the color of the incident light; and a binder layer that fixes the inorganic phosphor particle to one another, the binder layer including at least one type of metal oxides with a melting point of 800° C. or less. The substrate and the wavelength converter are fixed to each other by the binder layer of the wavelength converter.
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