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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：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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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：US20230408652A1
公开(公告)日：2023-12-21
申请号：US18241762
申请日：2023-09-01
Inventor： Hirotaka Ueno , Kiyoshi Morimoto , Keisuke Kojima
CPC classification number: G01S7/484 , G01S7/4814 , G01R15/04 , G01S17/10 , G01R19/0084
Abstract: A light emission device includes: a laser light source; an electric storage element for supplying a drive current to the laser light source; a plurality of switch elements connected in series to the laser light source; and an electrical element placed at least between a ground and an input part, for a switch opening/closing signal, of the switch element to which another one of the switch elements is connected on a downstream side, and configured to guide noise having a high level exceeding a voltage level of the switch opening/closing signal, to the ground.
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公开(公告)号：US10447005B2
公开(公告)日：2019-10-15
申请号：US15950846
申请日：2018-04-11
Inventor： Kazuhiko Yamanaka , Kiyoshi Morimoto , Hideki Kasugai , Kazuyuki Matsumura , Hideo Yamaguchi , Nobuyasu Suzuki
Abstract: A light source device includes: a semiconductor light-emitting device including a flat-shaped base having a first main surface on a first side and a second main surface and a semiconductor light-emitting element disposed on the first side; a first fixing component having a first through-hole and a first pressing surface that presses the first main surface; and a second fixing component having a second through-hole and a second pressing surface that presses the second main surface. The base is fixed between the first and second pressing surfaces by an engagement between a first inner surface surrounding the first through-hole of the first fixing component and a second outer surface of the second fixing component. A distance between the first and second pressing surfaces is smaller than or equal to a thickness of the base, and a void is formed lateral to the base between the first and second pressing surfaces.
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公开(公告)号：US09551474B2
公开(公告)日：2017-01-24
申请号：US14645462
申请日：2015-03-12
Inventor： Nobuaki Nagao , Seigo Shiraishi , Yoshihisa Nagasaki , Nobuyasu Suzuki , Kazuhiko Yamanaka , Kiyoshi Morimoto , Takahiro Hamada
IPC: F21S4/00 , F21V3/00 , F21V5/00 , F21V21/30 , F21V9/00 , F21S8/10 , F21V29/70 , F21V29/89 , H01S5/00 , H01L33/50 , H01L33/64 , F21V9/16 , F21Y101/00
CPC classification number: F21V9/00 , F21K9/61 , F21K9/64 , F21S41/14 , F21S41/16 , F21S45/47 , F21V9/30 , F21V29/70 , F21V29/89 , F21Y2101/00 , F21Y2115/30 , H01L33/50 , H01L33/507 , H01L33/644 , H01S5/005
Abstract: A wavelength conversion member includes: a heat conducting layer; a sapphire substrate having a third surface directly contact with a second surface of the heat conducting layer and the fourth surface opposite to the third surface; and a phosphor layer having a fifth surface directly contact with the fourth surface and a sixth surface opposite to the fifth surface, the phosphor layer including phosphor. At least one of an area of a first surface and an area of the second surface of the heat conducting layer is at least 2800 times as large as an area of the sixth surface of the phosphor layer. At least one of an area of the third surface and an area of the fourth surface of the sapphire substrate is at least two times as large as the area of the sixth surface of the phosphor layer.
Abstract translation: 波长转换构件包括：导热层; 蓝宝石衬底，其具有与导热层的第二表面和与第三表面相对的第四表面直接接触的第三表面; 以及具有与第四表面直接接触的第五表面和与第五表面相对的第六表面的磷光体层，荧光体层包括磷光体。 导热层的第一表面区域和第二表面区域中的至少一个区域是荧光体层的第六表面的面积的至少2800倍。 第三表面的区域和蓝宝石衬底的第四表面的面积中的至少一个是荧光体层的第六表面的面积的至少两倍。
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