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公开(公告)号：US20240310708A1
公开(公告)日：2024-09-19
申请号：US18671329
申请日：2024-05-22
Inventor： Shigekazu YAMAGISHI , Yusaku NISHIKAWA , Yoshiki TANAKA
CPC classification number: G03B21/204 , G02B26/008 , G03B21/2066
Abstract: A phosphor wheel according to the present disclosure includes: a first substrate having a first main surface and a second main surface opposite to the first main surface, the first substrate including a metal material; a phosphor ring provided on the first main surface of the first substrate; a second substrate having a third main surface and a fourth main surface being opposite to the third main surface, the second substrate including a metal material; a plurality of heat dissipation fins disposed on the fourth main surface of the second substrate; and a motor mounted on the first substrate. The second main surface of the first substrate and the third main surface of the second substrate are joined by brazing. The motor is mounted on the first substrate with a gap interposed between the motor and the second substrate.
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公开(公告)号：US20230314920A1
公开(公告)日：2023-10-05
申请号：US18207371
申请日：2023-06-08
Inventor： Shigekazu YAMAGISHI , Takashi IKEDA , Masato TANAKA
CPC classification number: G03B21/16 , G02B26/008 , G03B21/204
Abstract: A phosphor wheel includes a substrate that has a disk shape, and includes a first main surface, a second main surface opposite to the first main surface, and an opening, a phosphor layer that has a curved shape and is provided along a circumferential direction of the substrate on the first main surface, the phosphor layer being provided side by side with the opening in the circumferential direction in plan view, a heat dissipation fin that is provided on the second main surface, and a projection that is provided on the second main surface, and is different from the heat dissipation fin. The heat dissipation fin and the projection are disposed integrally with the substrate.
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公开(公告)号：US20230100903A1
公开(公告)日：2023-03-30
申请号：US17952636
申请日：2022-09-26
Inventor： Shigekazu YAMAGISHI , Yusaku NISHIKAWA
Abstract: A phosphor wheel device includes a phosphor wheel, a housing that accommodates the phosphor wheel, and a heat exchanger. A circulating gas flows between the housing and the heat exchanger. The housing includes a circulation fan, a first space in which the circulation fan is disposed, a second space in which gas is sent from the first space by the circulation fan, a third space in which the phosphor wheel is disposed, a first opening giving communication between the heat exchanger and the first space, a second opening giving communication between the first space and the second space, a third opening giving communication between the second space and the third space, and a fourth opening giving communication between the third space and the heat exchanger. The heat exchanger includes a circulation flow path through which circulating gas flows and an outside gas flow path through which outside gas flows.
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公开(公告)号：US20170104984A1
公开(公告)日：2017-04-13
申请号：US15284276
申请日：2016-10-03
Inventor： Shigekazu YAMAGISHI , Michihiro OKUDA
CPC classification number: H04N13/31 , H04N9/3102 , H04N9/3111 , H04N9/3155 , H04N9/3161 , H04N9/3164 , H04N9/3167 , H04N9/3188 , H04N13/32 , H04N13/334 , H04N13/337 , H04N13/363 , H04N13/365 , H04N13/398 , H04N2213/001
Abstract: A projection-type image display apparatus of the present disclosure includes a fluorescent substance, a blue-color laser diode excitation optical system, a DMD, a projection optical system, a polarizing plate, and a depolarizing plate. The fluorescent substance has characteristics of emitting predetermined fluorescence in response to excitation light. The blue-color laser diode has a semiconductor laser that emits laser light of a wavelength with which the fluorescent substance is excited. The excitation optical system condenses light from the blue-color laser diode. The DMD is controllable by a signal from an external source. The projection optical system is an optical system that can enlarge and project an image displayed by the DMD. The polarizing plate is disposed on the output side of the projection optical system.
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公开(公告)号：US20230152677A1
公开(公告)日：2023-05-18
申请号：US18094026
申请日：2023-01-06
Inventor： Shigekazu YAMAGISHI
CPC classification number: G03B21/2013 , G03B21/16 , G03B21/2033 , G03B21/2066
Abstract: A lighting device includes: a first light source unit including a plurality of laser elements and emitting a first light flux in a first direction; a second light source unit including a plurality of laser elements and being arranged to emit a second light flux in the first direction and to be spaced apart from the first light source unit by a first distance in a second direction orthogonal to the first direction; and an optical path shift optical system including: a first reflecting surface that reflects the second light flux emitted from the second light source unit toward the first light flux; and a second reflecting surface that is parallel to the first reflecting surface and reflects the second light flux reflected by the first reflecting surface to be parallel to the first light flux at a second distance shorter than the first distance.
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Patent Agency Ranking
公开(公告)号：US20230023296A1
公开(公告)日：2023-01-26
申请号：US17864897
申请日：2022-07-14
Inventor： Shigekazu YAMAGISHI , Yusaku NISHIKAWA , Yoshiki TANAKA
Abstract: A phosphor wheel according to the present disclosure includes: a first substrate having a first main surface and a second main surface opposite to the first main surface, the first substrate including a metal material; a phosphor ring provided on the first main surface of the first substrate; a second substrate having a third main surface and a fourth main surface being opposite to the third main surface, the second substrate including a metal material; a plurality of heat dissipation fins disposed on the fourth main surface of the second substrate; and a motor mounted on the first substrate. The second main surface of the first substrate and the third main surface of the second substrate are joined by brazing. The motor is mounted on the first substrate with a gap interposed between the motor and the second substrate.
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公开(公告)号：US20200096851A1
公开(公告)日：2020-03-26
申请号：US16699302
申请日：2019-11-29
Inventor： Shigekazu YAMAGISHI , Yusaku NISHIKAWA
Abstract: A lighting device of the present disclosure includes an excitation light source, a phosphor, a spreader, a reflective layer, and a reflective region. The excitation light source emits a polarized light. The phosphor receives the light as an excitation light from the excitation light source, and emits a fluorescent light, the phosphor including a plurality of phosphor pieces adjacently disposed on the reflective layer, the plurality of phosphor pieces having a same characteristic. The spreader supports the phosphor. The reflective layer is disposed between the phosphor and the spreader, and reflects the fluorescent light. The reflective region is disposed between the plurality of phosphor pieces, the reflective region reflecting the received excitation light while keeping a polarization characteristic of the received excitation light.
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18.发明申请公开(公告)号：US20200089092A1
公开(公告)日：2020-03-19
申请号：US16567539
申请日：2019-09-11
Inventor： Shigekazu YAMAGISHI , Yusaku NISHIKAWA
IPC: G03B21/20 , F21V29/503 , F21V29/67 , G02B26/00 , F21K9/64
Abstract: A phosphor wheel apparatus includes: a substrate made of a heat conductive material having a first light reflectance, the substrate having first and second surfaces facing each other; a phosphor layer disposed on the first surface of the substrate; an adhesive layer bonding the substrate and the phosphor layer to each other; and a plurality of fins disposed on the second surface of the substrate, wherein the adhesive layer includes an adhesive having first thermal conductivity and filler particles, and the filler particles have second thermal conductivity higher than the first thermal conductivity, and have a second light reflectance higher than the first light reflectance.
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19.发明申请公开(公告)号：US20190310539A1
公开(公告)日：2019-10-10
申请号：US16375079
申请日：2019-04-04
Inventor： Shigekazu YAMAGISHI , Yuki YAMAGATA
Abstract: An illumination apparatus includes first and second laser light source units, each of which is configured by juxtaposing a plurality of laser light sources in an array, and which are provided to oppose each other. The illumination apparatus further include first and second reflecting members. The second reflecting member has a predetermined first gap and is divided into first and second reflecting portions, and the first reflecting member is disposed so as to pass through the first gap. The second outgoing light beam transmitted through the transmitting region of the first reflecting member and the fourth outgoing light beam transmitted through the transmitting region of the second reflecting member are reflected in the output light direction by the reflecting region of the second reflecting member and the reflecting region of the first reflecting member, respectively.
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公开(公告)号：US20180095350A1
公开(公告)日：2018-04-05
申请号：US15718348
申请日：2017-09-28
Inventor： Masafumi TANAKA , Shigekazu YAMAGISHI , Takashi IKEDA
CPC classification number: G03B21/16 , F21V9/30 , F21V14/08 , F21V29/77 , F21V29/83 , G03B21/2013 , G03B21/204
Abstract: A phosphor wheel module includes a substrate and a phosphor region disposed on a surface of the substrate. The phosphor region includes a phosphor that is disposed on at least a part of a circumference of a circle with a first radius from a rotation center of the substrate. The substrate includes a ventilation region and a heat conduction region. The ventilation region includes a plurality of openings that is located closer to the rotation center of the substrate than the phosphor region. The heat conduction region is located farther away from the rotation center of the substrate than the phosphor region.
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