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公开(公告)号：US20190259917A1
公开(公告)日：2019-08-22
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
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：US20180342629A1
公开(公告)日：2018-11-29
申请号：US16054688
申请日：2018-08-03
Inventor： Kazuhiko YAMANAKA , Hirotaka UENO , Masaharu FUKAKUSA , Toshihiro KOGA
IPC: H01L31/02 , F21V23/04 , F21S41/16 , F21S45/10 , H01L31/0216 , H01L31/101 , H01L27/144
Abstract: A wavelength conversion element includes a substrate, a wavelength converting member disposed on at least part of a surface of substrate and having a shape of a plate or film, and a light receiver integrated in the substrate and including a p-n junction composed of a p-type semiconductor and an n-type semiconductor.
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Patent Agency Ranking
公开(公告)号：US20180216811A1
公开(公告)日：2018-08-02
申请号：US15926613
申请日：2018-03-20
Inventor： Masaharu FUKAKUSA , Hideo YAMAGUCHI , Hirotaka UENO , Kazuhiko YAMANAKA
IPC: F21V29/503 , F21V17/12 , F21V29/507 , F21V29/70 , H01S5/00 , F21S2/00
Abstract: A light source device includes: a holder that has a first surface and a second surface located higher than the first surface, and is an integral structure; a semiconductor light-emitting device on the first surface; an optical element unit that is disposed above the semiconductor light-emitting device, and has a reflective surface that inclines with respect to the first surface and reflects emitted light from the semiconductor light-emitting device; and a phosphor optical element that is disposed on the second surface and irradiated with reflected light from the optical element unit.
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公开(公告)号：US20230417909A1
公开(公告)日：2023-12-28
申请号：US18244103
申请日：2023-09-08
Inventor： Kiyoshi MORIMOTO , Hirotaka UENO
CPC classification number: G01S17/10 , G01S7/4814 , G01R15/04 , G01R19/10
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 switch element connected in series to the laser light source; and a monitoring circuit configured to monitor temporal change in a voltage of the electric storage element.
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公开(公告)号：US20210141062A1
公开(公告)日：2021-05-13
申请号：US17153823
申请日：2021-01-20
Inventor： Kiyoshi Hibino , Takashi HARUGUCHI , Masaomi INOUE , Kazuhisa IDE , Masahiro SHIIHARA , Kouichi BAIRIN , Kouichi KUMAMARU , Hirotaka UENO , Hideo YAMAGUCHI
Abstract: A distance measurement device for measuring a distance to an object that exists in a distance measurement region includes: a light source configured to emit laser light; a lens configured to converge the laser light emitted from the light source, into substantially parallel light; a tubular light blocking member disposed on an optical path of the laser light emitted from the light source and surrounding the optical path; a photodetector configured to detect reflected light, of the laser light, reflected at the distance measurement region; and a condensing lens configured to condense the reflected light passing through the outside of the light blocking member, onto the photodetector.
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公开(公告)号：US20180375001A1
公开(公告)日：2018-12-27
申请号：US16053047
申请日：2018-08-02
Inventor： Hirotaka UENO , Hideo YAMAGUCHI , Masaharu FUKAKUSA , Kazuhiko YAMANAKA
Abstract: A light source device includes: a semiconductor light emitting device which emits laser light; a wavelength conversion component which emits fluorescence by being irradiated with the laser light emitted from the semiconductor light emitting device as excitation light; and a photodetector on which a portion of light emitted from the wavelength conversion component is incident. The photodetector is disposed at a location off a light path of usable radiation light which is emitted from the wavelength conversion component to a space and used as illumination light.
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公开(公告)号：US20180233633A1
公开(公告)日：2018-08-16
申请号：US15951897
申请日：2018-04-12
Inventor： Kazuhiko YAMANAKA , Hideki KASUGAI , Hirotaka UENO , Kimihiro MURAKAMI
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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