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公开(公告)号：US10381532B2
公开(公告)日：2019-08-13
申请号：US15765258
申请日：2016-10-06
Inventor： Masahito Yamana , Noboru Iizawa , Jun Hirai , Yoshiyuki Nakano
IPC: H01L33/58 , F21V9/30 , G02B5/20 , H01S5/02 , F21V29/502 , F21V5/00 , G03B21/20 , H04N9/31 , F21V29/503 , F21V29/70 , G02B27/10 , H01L33/50 , A61B1/06 , F21Y115/30 , F21S2/00
Abstract: A wavelength conversion device includes a light source for emitting light having a predetermined wavelength in a wavelength region from ultraviolet light to visible light, a phosphor layer for performing wavelength conversion on light which is emitted from the light source and incident on an incidence face, and an optical member which is arranged between the light source and the phosphor layer, splits and separates light emitted from the light source and emits the split and separated light beams to the incidence face of phosphor layer.
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公开(公告)号：US09739701B2
公开(公告)日：2017-08-22
申请号：US15216610
申请日：2016-07-21
Inventor： Hirotaka Matsunami , Yoshiyuki Nakano
CPC classification number: G01N15/1434 , G01N15/0211 , G01N15/1404 , G01N15/1459 , G01N2015/0046 , G01N2015/1486
Abstract: A particle sensor includes: a detecting area into which a gas including particles is introduced; a light-projecting element; a light-receiving element which receives scattered light of the light reflected by the particles in the gas in the detecting area; a heater which heats the gas; a reflector which directs the scattered light to the light-receiving element, wherein the reflector includes: a first ellipsoidal portion having an inner surface shape that defines a portion of a surface of revolution of a spheroid; and a first spherical portion having an inner surface shape that defines a portion of a spherical surface of a sphere, wherein the first ellipsoidal portion has one focus of the spheroid located in the detecting area and the other focus of the spheroid located at or proximate to the light-receiving element, and the first spherical portion has a center of the sphere located in the detecting area.
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公开(公告)号：US10557997B2
公开(公告)日：2020-02-11
申请号：US15454404
申请日：2017-03-09
Inventor： Hiroshi Kitano , Shintaro Hayashi , Yoshiyuki Nakano , Hideharu Kawachi
Abstract: A light source device and a method of manufacturing a light source device are provided. The light source device includes a base. A light-emitter is above the base. A cap is joined to the base to cover the light-emitter. The cap includes an opening in a position corresponding to the light-emitter. A first light guide is in communication with the opening for guiding, to outside of the cap, light emitted by the light-emitter. A first ferrule is provided around the first light guide. The first ferrule is joined to an edge of the opening in a state in which the first ferrule is in the opening.
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公开(公告)号：US10209529B2
公开(公告)日：2019-02-19
申请号：US15962405
申请日：2018-04-25
Inventor： Yoshiyuki Nakano
Abstract: An illumination system of an embodiment includes: a solid-state light source; a wavelength conversion element that converts a wavelength of light emitted from the solid-state light source; a light guide tube that allows incoherent light emitted from the wavelength conversion element to propagate and transmit therethrough, and that has a floating property to float in water; and a connection member that connects and retains the light guide tube on a road surface while securing the floating property of the light guide tube.
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公开(公告)号：US10151431B2
公开(公告)日：2018-12-11
申请号：US15294938
申请日：2016-10-17
Inventor： Yoshiyuki Nakano
IPC: F21K9/64 , F21S8/04 , F21V3/04 , F21V5/04 , F21V7/00 , F21V8/00 , F21Y115/30 , F21W131/405 , G02B5/18
Abstract: A lighting apparatus having laser light as a light source is provided. The lighting apparatus includes: a light-emitter which radiates light of a wavelength different from a wavelength of the laser light; and a lens including a light distribution controlling structure that controls distribution of the light radiated from the light-emitter. The lens is disposed opposite a laser light entry side of the lighting apparatus. The light-emitter is disposed between the lens and the laser light entry side. The lens integrally includes, along an optical axis of the laser light, a light-dispersing structure configured to disperse the laser light.
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Patent Agency Ranking
公开(公告)号：US09857057B2
公开(公告)日：2018-01-02
申请号：US15292743
申请日：2016-10-13
Inventor： Yoshiyuki Nakano
CPC classification number: F21V9/08 , F21V3/04 , F21V5/008 , F21V5/04 , F21V9/30 , F21Y2115/30 , G02B3/00 , G02B3/0043 , G02B3/0056 , G02B6/0008
Abstract: A lighting apparatus which has a light emitter that emits light of a different wavelength from a laser light with which the lighting apparatus is irradiated is provided. The lighting apparatus includes a condenser lens that condenses the laser light, a focusing lens that focuses the laser light that has passed through the condenser lens, and an optical component disposed between the condenser lens and the focusing lens. The optical component includes a plurality of lenses disposed at a plurality of locations on circumferences of virtual concentric circles. The virtual concentric circles include a center which is an origin. Lenses which are adjacent along a radial axis passing through the origin, among the plurality of lenses, have different phases with respect to the radial axis.
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公开(公告)号：US10234122B2
公开(公告)日：2019-03-19
申请号：US15453349
申请日：2017-03-08
Inventor： Hideharu Kawachi , Yoshiyuki Nakano , Shinichi Kitaoka
IPC: F21V5/04 , F21V9/08 , F21V9/30 , F21V11/00 , F21V11/18 , F21V13/12 , F21V17/10 , F21V25/02 , F21Y115/30
Abstract: A lighting apparatus including a base is provided. The base includes a through-hole. The through-hole is aligned with an optical path of laser light for receiving and transmitting the laser light. A light emitter which, when irradiated with the laser light transmitted through the through-hole, radiates light by converting a wavelength of the laser light. An attachment component is provided on the base for attachment of the light emitter to the base. The light emitter is removable from the base. A light blocker opens the optical path of the laser light by being contacted by the light emitter when the light emitter is attached to the base, and blocks the optical path of the laser light when the light emitter is removed from the base.
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公开(公告)号：US09958139B2
公开(公告)日：2018-05-01
申请号：US15450639
申请日：2017-03-06
Inventor： Hideharu Kawachi , Yoshiyuki Nakano , Shinichi Kitaoka
IPC: F21V7/04 , G02B7/02 , G05D25/00 , F21V11/10 , F21V29/503 , F21K9/61 , F21K9/64 , F21V5/04 , F21V9/16 , F21V15/015 , F21V8/00 , F21Y115/30 , F21W131/405
CPC classification number: F21V11/10 , F21K9/61 , F21K9/64 , F21V5/04 , F21V5/048 , F21V9/30 , F21V15/01 , F21V15/015 , F21V29/503 , F21W2131/405 , F21Y2115/30 , G02B6/0006 , G02B6/0008
Abstract: An illumination apparatus which uses laser light emitted by a light source is provided. The illumination apparatus includes a housing which is tubular, internally includes an optical path for the laser light, and includes a first end surface having an opening through which the laser light passing through the optical path is released. A light emitter is opposed to the opening, receives the laser light released through the opening, converts the laser light into light having a different wavelength of a predetermined color, and emits the light. A cap is removably attached to a first end portion of the housing and through which the light emitted by the light emitter is released. A shutter opens the optical path when the cap is attached to the housing and closes the optical path when the cap is detached from the housing.
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公开(公告)号：US10859249B2
公开(公告)日：2020-12-08
申请号：US16860674
申请日：2020-04-28
Inventor： Masahito Yamana , Noboru Iizawa , Shintaro Hayashi , Yoshiyuki Nakano
IPC: F21V29/502 , F21V9/30 , F21V13/02 , G02B5/20 , H01S5/06 , H01L33/50 , F21Y115/30 , F21V5/04 , F21V29/70 , F21V29/89
Abstract: A wavelength conversion device for laser light including a laser light source that emits laser light having a predetermined wavelength; a first substrate that is light-transmissive; a second substrate that is light-transmissive; a phosphor layer provided between and in surface contact with the first substrate and the second substrate, the phosphor layer converting a wavelength of the laser light; and a gap-maintaining component located between the first substrate and the second substrate, the gap-maintaining component adjusting a thickness of the phosphor layer by maintaining a uniform distance between the first substrate and the second substrate. Each of the first substrate and the second substrate has a thermal conductivity higher than a thermal conductivity of the phosphor layer. The gap-maintaining component is a plurality of thickness adjustment particles that are light-transmissive and have a shape having a substantially equal diameter, and the shape is one of wire-shaped, ring-shaped, and protruding.
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公开(公告)号：US10677437B2
公开(公告)日：2020-06-09
申请号：US16322145
申请日：2017-09-14
Inventor： Masahito Yamana , Noboru Iizawa , Shintaro Hayashi , Yoshiyuki Nakano
IPC: F21V9/16 , F21V29/502 , H01S5/06 , H01L33/50 , G02B5/20 , F21V13/02 , F21V9/30 , F21Y115/30 , F21V29/89 , F21V29/70 , F21V5/04
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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