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公开(公告)号：US09897286B2
公开(公告)日：2018-02-20
申请号：US15435762
申请日：2017-02-17
Inventor： Kazuhiko Yamanaka , Norio Ikedo
CPC classification number: F21V9/08 , C09K11/02 , C09K11/025 , C09K11/08 , F21V5/04 , F21V7/0066 , F21V9/30 , F21Y2115/30 , H01L33/505 , H01L33/507 , H01L2224/16225 , H05B33/10
Abstract: A phosphor optical element includes: a base member; a phosphor-containing member that includes a transparent member containing a phosphor particle; and a cover member, wherein the base member, the phosphor-containing member, and the cover member are sequentially formed on a transparent base that is transparent to a wavelength of incident light from an excitation light source, the phosphor particle has a diameter no greater than the wavelength of the incident light, and in an arbitrary cross section of the phosphor-containing member in a direction perpendicular to a main surface of the transparent base, the phosphor-containing member has, in a direction perpendicular to the main surface of the transparent base, a thickness no greater than the wavelength of the incident light.
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公开(公告)号：US09735314B2
公开(公告)日：2017-08-15
申请号：US15174525
申请日：2016-06-06
Inventor： Katsuya Samonji , Kazuhiko Yamanaka , Shinji Yoshida , Hiroyuki Hagino
IPC: H01L27/15 , H01L33/12 , H01L33/32 , H01S5/024 , H01S5/20 , H01S5/343 , H01L33/14 , H01L33/16 , H01L33/48 , B82Y20/00 , H01L33/64 , H01L33/06 , H01S5/02 , H01S5/042 , H01S5/323 , H01S5/022
CPC classification number: H01L33/12 , B82Y20/00 , H01L33/06 , H01L33/145 , H01L33/16 , H01L33/32 , H01L33/483 , H01L33/64 , H01L33/641 , H01L2224/48091 , H01S5/0206 , H01S5/02212 , H01S5/0226 , H01S5/02272 , H01S5/02469 , H01S5/02476 , H01S5/0425 , H01S5/2009 , H01S5/32341 , H01S5/34333 , H01S2304/04 , H01L2924/00014
Abstract: A semiconductor light emitting device includes: a nitride semiconductor light emitting element including a nitride semiconductor substrate having a polar or semipolar surface and a nitride semiconductor multilayer film stacked on the polar or semipolar surface; and a mounting section to which the element is mounted. The nitride semiconductor multilayer film includes an electron block layer. The electron block layer has a smaller lattice constant than the nitride semiconductor substrate. The mounting section includes at least a first mounting section base. The first mounting section base is located close to the nitride semiconductor light emitting element. The first mounting section base has a lower thermal expansion coefficient than the nitride semiconductor multilayer film. The first mounting section base has a lower thermal conductivity than the nitride semiconductor multilayer film.
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公开(公告)号：US11024777B2
公开(公告)日：2021-06-01
申请号：US16399790
申请日：2019-04-30
Inventor： Kazuhiko Yamanaka , Kenichi Matsumoto , Hideo Yamaguchi , Wakahiko Okazaki , Yasuhiko Enami , Taku Kobayashi , Kazuki Adachi , Hirotaka Ueno
IPC: H01L33/50 , H01L33/36 , G02B5/20 , H01L33/58 , H05B33/08 , B60Q11/00 , H01S5/022 , F21V23/00 , B60Q1/04 , H05B45/37 , H05B45/18
Abstract: A light source device includes a mounted substrate which is a multi-layered substrate, a semiconductor light-emitting device which emits a laser beam, a wavelength-converting member which radiates fluorescence by being irradiated with the laser beam emitted from the semiconductor light-emitting device as an excitation light, a state detection circuit, an electric field effect type transistor which adjusts an electric current amount applied to the semiconductor light-emitting device upon receipt of an output from the state detection circuit, and an external connecting member, and the semiconductor light-emitting device, the state detection circuit, the transistor, and the external connecting member are mounted on the single mounted substrate.
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公开(公告)号：US09885813B2
公开(公告)日：2018-02-06
申请号：US14975667
申请日：2015-12-18
Inventor： Kazuhiko Yamanaka , Kiyoshi Morimoto , Seigo Shiraishi , Yoshihisa Nagasaki
CPC classification number: G02B5/26 , F21S41/14 , F21S41/16 , F21S41/24 , F21S41/285 , F21S41/37 , F21S45/10 , G02B5/208 , G02B27/106 , G03B21/2013 , G03B21/204 , G03B21/208
Abstract: A projection apparatus of the present disclosure includes a light-emitting element for emitting excitation light, a wavelength converter for receiving the excitation light, converting the excitation light into light of a different wavelength, and emitting the converted light as radiation light, and an optical filter for receiving the radiation light. The optical filter reflects long-wavelength light of wavelengths longer than wavelengths of the radiation light. With this configuration, the optical filter reflects long-wavelength light of wavelengths longer than wavelengths of the radiation light, thus being able to prevent the wavelength converter from being irradiated with long-wavelength light, and being able to prevent deterioration of the wavelength converter.
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公开(公告)号：US11028988B2
公开(公告)日：2021-06-08
申请号：US16184125
申请日：2018-11-08
Inventor： Kazuhiko Yamanaka , Hideki Kasugai
IPC: H01L33/50 , G02B5/02 , G02B27/10 , F21S41/16 , F21S41/32 , F21S41/20 , F21V9/38 , F21S45/70 , F21S41/176 , F21S41/19 , F21S41/39 , F21V9/32 , H01S5/00 , F21S41/365 , F21V9/45 , F21V13/14 , F21V7/24 , H01S5/02326 , F21Y115/30 , H01S5/0683 , H01S5/068 , H01S5/323 , H01S5/02251 , H01S5/02255
Abstract: A light source device includes a semiconductor light-emitting device which emits coherent excitation light, and a wavelength conversion element which is spaced from the semiconductor light-emitting device, generates fluorescence by converting the wavelength of the excitation light emitted from semiconductor light-emitting device, and generates scattered light by scattering the excitation light. The wavelength conversion element includes a support member, and a wavelength converter disposed on the support member. The wavelength converter includes a first wavelength converter, and a second wavelength converter which is disposed around the first wavelength converter to surround the first wavelength converter in a top view of the surface of the support member on which the wavelength converter is disposed. The ratio of the intensity of fluorescence to that of scattered light is lower in the second wavelength converter than in the first wavelength converter.
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Patent Agency Ranking
公开(公告)号：US09970621B2
公开(公告)日：2018-05-15
申请号：US14997445
申请日：2016-01-15
Inventor： Kazuhiko Yamanaka , Kiyoshi Morimoto , Yoshihisa Nagasaki , Seigo Shiraishi
IPC: F21S41/663 , F21S41/25 , F21S8/10
CPC classification number: F21S41/14 , F21S41/16 , F21S41/25 , F21S41/645 , F21S41/663
Abstract: The present disclosure aims to enhance controllability of a lighting apparatus and increase durability. A lighting apparatus includes a light source; a condenser that converges first light emitted from the light source onto a predetermined focal position of a wavelength conversion element as converged light; the wavelength conversion element that receives the converged light and emits second light at an emission point; and a projection lens that projects the second light as projection light. The lighting apparatus changes the focal position of the condenser lens to change the emission point of the second light to the projection lens, thereby being capable of projecting the second light in any direction.
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公开(公告)号：US09644803B2
公开(公告)日：2017-05-09
申请号：US14693909
申请日：2015-04-23
Inventor： Hideki Kasugai , Kazuhiko Yamanaka , Kiyoshi Morimoto
IPC: F21K99/00 , G02B26/00 , G03B21/20 , G03B33/08 , H04N9/31 , F21V9/16 , F21V14/08 , G02B5/30 , G02B27/14
CPC classification number: F21K9/64 , F21V9/30 , F21V14/08 , G02B5/3025 , G02B26/008 , G02B27/141 , G02B27/286 , G02B27/48 , G03B21/204 , G03B21/2073 , G03B33/08 , H04N9/3114 , H04N9/3158
Abstract: In a light source in which a semiconductor luminescence element and a phosphor are combined, red light having high color purity is efficiently radiated. The light source includes: a semiconductor luminescence element; a fixed or rotatable first wavelength converting unit; and a rotatable second wavelength converting unit. The second wavelength converting unit includes: a second wavelength converting region that absorbs output light emitted from the semiconductor luminescence element and radiates light having a second wavelength different from that of the output light; and a transmission region that transmits the output light. The first wavelength converting unit absorbs the output light to radiate light having a first wavelength longer than the second wavelength of the light, and the light having the first wavelength is transmitted through the transmission region.
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公开(公告)号：US10777711B2
公开(公告)日：2020-09-15
申请号：US15951897
申请日：2018-04-12
Inventor： Kazuhiko Yamanaka , Hideki Kasugai , Hirotaka Ueno , Kimihiro Murakami
IPC: H01L33/50 , F21V29/502 , F21S2/00 , F21V7/22 , F21S41/176 , F21S41/16 , H01L33/00 , H01L33/60 , H01L33/62 , G02B5/02
Abstract: A light emitting device includes a wavelength conversion element, and an excitation light source which radiates excitation light to the wavelength conversion element. The wavelength conversion element includes a support member having a supporting surface, and a wavelength conversion member disposed on the supporting surface so as to be contained within the support member when the support member is viewed from the supporting surface side. An outer peripheral region on the support member, which is an outer peripheral portion of an arrangement region including the wavelength conversion member and is exposed from the wavelength conversion member, includes a light absorbing portion which can absorb first light having same wavelength as the excitation light or a light scattering portion which can scatter the first light. The arrangement region includes a reflective member which is disposed between the wavelength conversion member and the support member, and is different from the support member.
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公开(公告)号：US09772072B2
公开(公告)日：2017-09-26
申请号：US14990614
申请日：2016-01-07
Inventor： Kazuhiko Yamanaka , Kiyoshi Morimoto , Yoshihisa Nagasaki , Seigo Shiraishi
CPC classification number: F21K9/64 , G02B19/0009 , G02B19/0052 , H01S5/005 , H01S5/32341 , H01S5/4031
Abstract: An illumination apparatus of the disclosure includes a semiconductor light-emitting element and a light conversion element. The semiconductor light-emitting element has a first optical waveguide and a second optical waveguide. The light conversion element has a first light converter and a second light converter. A first emitted light emitted from first optical waveguide enters the first light converter and a second emitted light emitted from the second optical waveguide enters the second light converter. First power applied to the first optical waveguide and second power applied to the second optical waveguide are independent.
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10.发明授权Image display device which reduces mutual interference of light reflected by a screen 有权降低屏幕反射的光的相互干扰的图像显示装置公开(公告)号：US09547225B2
公开(公告)日：2017-01-17
申请号：US14744093
申请日：2015-06-19
Inventor： Hiroshi Ohno , Kazuhiko Yamanaka
CPC classification number: G03B21/204 , F21V13/14 , G02B26/10 , G02B26/101 , G02B27/48 , G09G3/02 , H04N9/3129 , H04N9/3138
Abstract: An image display device which reduces speckles in an image display device using a laser source includes: a laser source which emits excitation light; a collecting lens which collects the excitation light; a deflecting element which scans the excitation light collected by the collecting lens; and a light conversion panel which converts a wavelength of the excitation light scanned by the deflecting element and emits fluorescence, wherein the light conversion panel includes a plurality of phosphor layers which are planarly disposed, absorb the excitation light, and emit the fluorescence.
Abstract translation: 使用激光源减少图像显示装置中的斑点的图像显示装置包括：发射激发光的激光源; 收集激发光的收集透镜; 偏转元件，其对由收集透镜收集的激发光进行扫描; 以及光转换面板，其转换由偏转元件扫描的激发光的波长并发射荧光，其中，所述光转换面板包括平面布置的多个荧光体层，吸收激发光并发射荧光。
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