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公开(公告)号：US20240167672A1
公开(公告)日：2024-05-23
申请号：US18283170
申请日：2021-12-07
Inventor： Shogo MOTEGI , Shintaro HAYASHI , Toshiaki TAKENAKA , Fumiya YAGI
CPC classification number: F21V23/0457 , F21V9/40
Abstract: The light source device includes at least one excitation light source which emits primary light, a light conversion member which emits secondary light that contains the primary light and wavelength-converted light obtained by converting a wavelength of at least part of the primary light, a sensor which detects the primary light and the wavelength-converted light, and a controller which obtains a first signal which is a signal indicating the detected primary light and a second signal indicating the wavelength-converted light detected by the sensor. The controller determines an operation safety parameter based on a ratio of an output value of the first signal to an output value of the second signal, and controls the at least one excitation light source based on the operation safety parameter with respect to a predetermined threshold or an amount of change of the operation safety parameter from that during normal operation.
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公开(公告)号：US20220099274A1
公开(公告)日：2022-03-31
申请号：US17409251
申请日：2021-08-23
Inventor： Toshiaki TAKENAKA , Shintaro HAYASHI , Shogo MOTEGI , Yudai SHIBATA , Fumiya YAGI , Takeshi ABE
Abstract: A light source device, includes: a plurality of excitation light sources that emit primary light; an optical member that condenses the primary light; a fluorescent unit that emits secondary light including the primary light and wavelength converted light which is at least some of the primary light on which wavelength conversion is performed; and a sensor that detects an anomaly in the fluorescent unit. In addition, when seen along an optical axis of the primary light emitted by the plurality of excitation light sources, the sensor circumscribes, among the plurality of excitation light sources, a first excitation light source and a second excitation light source different from the first excitation light source, and is disposed inside an imaginary circle having, as a diameter, a line segment connecting the first excitation light source and the second excitation light source.
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公开(公告)号：US20190195484A1
公开(公告)日：2019-06-27
申请号：US16322145
申请日：2017-09-14
Inventor： Masahito YAMANA , Noboru IIZAWA , Shintaro HAYASHI , Yoshiyuki NAKANO
IPC: F21V29/502 , G02B5/20 , H01L33/50 , H01S5/06
Abstract: A wavelength conversion device, etc., for laser light according to the present disclosure includes: a first substrate that is light-transmissive; a second substrate that is light-transmissive; and a phosphor layer provided between the first substrate and the second substrate and including a phosphor that converts the wavelength of incident laser light having a predetermined wavelength. The laser light has a laser irradiation power density of at least 0.03 W/mm2, and each of the first substrate and the second substrate has a thermal conductivity higher than the thermal conductivity of the phosphor layer.
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公开(公告)号：US20180283651A1
公开(公告)日：2018-10-04
申请号：US15765261
申请日：2016-10-06
Inventor： Masahito YAMANA , Shintaro HAYASHI
CPC classification number: F21V5/04 , F21V5/007 , F21V9/30 , F21Y2115/10 , G02B3/08 , G02B5/18 , G02B5/1876 , G02B5/20
Abstract: An optical member includes: a phosphor layer including a phosphor that converts a wavelength of a portion of light from a light source which is incident on an incidence face; and a microlens array that causes the portion of light wavelength-converted by the phosphor layer and the other portion of light transmitted through the phosphor layer to emerge from an emission face, in which a diffractive lens array for diffracting the portion of light wavelength-converted and the other portion of light transmitted is provided on the emission face of the microlens array, and a pitch of the diffractive lens array is different for each of predetermined sections.
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公开(公告)号：US20180058643A1
公开(公告)日：2018-03-01
申请号：US15682706
申请日：2017-08-22
Inventor： Hiroshi KITANO , Hideharu KAWACHI , Shintaro HAYASHI
CPC classification number: F21K9/64 , F21K9/90 , F21V9/35 , F21Y2115/30 , H01S5/0014 , H01S5/005 , H01S5/02284 , H01S5/32341 , H01S5/4012 , H01S5/4087
Abstract: A luminaire including a wavelength converter and a method of manufacturing the luminaire are provided. The wavelength converter radiates, based on a laser light beam, a light beam having a wavelength different from the laser light beam The method of measuring the luminaire includes measuring wavelengths of laser light beams oscillated by a plurality of laser elements to identify main wavelengths of the plurality of laser elements, storing association information between main wavelength information items indicating the main wavelengths identified and element information items identifying the plurality of laser elements corresponding to the main wavelengths identified, selecting a combination of laser elements having a composite wavelength falling within a predetermined range, from the plurality of laser elements, based on the association information, and arranging optical paths to irradiate a same area of the wavelength converter with the laser light beams of the combination of laser elements selected.
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Patent Agency Ranking
公开(公告)号：US20180039063A1
公开(公告)日：2018-02-08
申请号：US15659766
申请日：2017-07-26
Inventor： Kazuyuki YAMAE , Shintaro HAYASHI
CPC classification number: G02B23/2469 , A61B1/0653 , F21V9/30 , F21Y2115/30 , G02B19/0009 , G02B19/0052 , G02B23/2453 , G02B23/2476 , G02B27/0916
Abstract: An optical device includes: an excitation light source; a first light transmitter that transmits excitation light emitted from the excitation light source; a fluorescent light part that is disposed on a surface of the first light transmitter opposite a surface through which the excitation light enters, and emits fluorescent light from the excitation light; a second light transmitter that interposes the fluorescent light part with the first light transmitter, and transmits light emitted from the fluorescent light part; a light transmission fiber that guides the light exiting from the second light transmitter; and a microfabricated film that is disposed on a side of the second light transmitter closer to the light transmission fiber, and collects, toward the light transmission fiber, the light emitted from the fluorescent light part.
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公开(公告)号：US20180031444A1
公开(公告)日：2018-02-01
申请号：US15658589
申请日：2017-07-25
Inventor： Shintaro HAYASHI
Abstract: A light-emitting apparatus includes: a radiation apparatus which includes a first laser diode and a second laser diode; a light guide which includes a first photoreceptor, a second photoreceptor, and a leak, and guides laser light received by the first photoreceptor and the second photoreceptor, the leak allowing leakage laser light to be leaked out in a direction crossing a light-guiding direction, the leakage laser light being part of the laser light; a converter which converts a wavelength of the leakage laser light leaked out of the light guide; and a detector which detects, at a non-radiation time in which laser light is not radiated, an electromotive force of the first laser diode, the electromotive force being based on laser light radiated by the second laser diode.
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公开(公告)号：US20170294559A1
公开(公告)日：2017-10-12
申请号：US15504253
申请日：2015-11-04
Inventor： Koji GOTO , Shintaro HAYASHI , Akihiko MURAI , Takuya MINO , Saki AOKI , Kenji TSUBAKI
CPC classification number: H01L33/32 , H01L33/38 , H01L33/44 , H01L33/641 , H01L33/644
Abstract: The semiconductor device includes: an AlGaN layer; a contact electrode; an insulating film; and a passivation film. The semiconductor device further includes: an extended wire extending over the contact electrode and the insulating film; and a pad electrode electrically connected to the extended wire. The passivation film covers the insulating film and the extended wire and including an opening for exposing the pad electrode. The insulating film accommodates the opening in a plan view. The passivation film accommodates the contact electrode in a plan view. The semiconductor device further includes a heat dissipation layer on a surface of the passivation film.
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公开(公告)号：US20170293060A1
公开(公告)日：2017-10-12
申请号：US15483782
申请日：2017-04-10
Inventor： Shintaro HAYASHI , Atsushi MOTOYA , Naoya IKENO , Motohide TOSHIKAWA
CPC classification number: G02B6/001 , A63H27/10 , A63H2027/1058 , F21L4/00 , F21V3/026 , F21V33/008 , F21W2131/10 , F21Y2115/30 , G02B6/0008 , G09F13/22 , G09F21/06 , G09F2013/222 , H04R1/028
Abstract: A light-emitting device includes: a balloon, a light source disposed outside the balloon; and an optical fiber that connects the balloon and the light source and propagates light emitted by the light source. At least one of the balloon and the optical fiber becomes luminous by the light emitted by the light source.
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公开(公告)号：US20170184447A1
公开(公告)日：2017-06-29
申请号：US15388614
申请日：2016-12-22
Inventor： Hirotaka MATSUNAMI , Shintaro HAYASHI , Shinichi KITAOKA
CPC classification number: G01J1/0252 , G01J1/0403 , G01N15/00 , G01N15/0211 , G01N15/1434 , G01N15/1459 , G01N21/53 , G01N2015/0046 , G01N2015/1486 , G08B17/107 , G08B17/113
Abstract: A particle sensor is provided. The particle sensor includes a light projector that projects light to a detection area. A light receiver receives scattered light. The scattered light is light from the light projector that has been scattered by particles in the detection area. A first support supports the light receiver. A second support supports the light projector and has a linear expansion coefficient different from a linear expansion coefficient of the first support. The first support includes a first placement region in which the light receiver is disposed and a second placement region in which the second support is disposed. The first placement region and the second placement region are located at different distances from at least one of an optical axis of the light projector and an optical axis of the light receiver.
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