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公开(公告)号：US20230418047A1
公开(公告)日：2023-12-28
申请号：US18242639
申请日：2023-09-06
Inventor： Takashi IKEDA , Yusaku NISHIKAWA , Yoshiki TANAKA
CPC classification number: G02B26/008 , G03B21/204
Abstract: The wavelength conversion device includes a wavelength conversion element that generates, from incident first light, second light having a wavelength different from a wavelength of the first light and third light having a wavelength different from the wavelength of the first light and the wavelength of the second light. The wavelength conversion element includes a plurality of wavelength converters arranged adjacent to each other in a first direction. Each of the plurality of wavelength converters includes a first phosphor layer that converts the first light into fluorescent light that is the second light, and a second phosphor layer that converts the first light into fluorescent light that is the third light. The first phosphor layer and the second phosphor layer are arranged adjacent to each other to cause the plurality of first phosphor layers and the plurality of second phosphor layers to be alternately arranged in the first direction.
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公开(公告)号：US20210157126A1
公开(公告)日：2021-05-27
申请号：US17104417
申请日：2020-11-25
Inventor： Yusaku NISHIKAWA , Taiki BESSHO , Yasuto SHIROI , Shigekazu YAMAGISHI , Takashi IKEDA
Abstract: A phosphor wheel device includes a motor having a rotation shaft, a phosphor wheel substrate attached to one end side of the rotation shaft, and a first balancer fixed to the phosphor wheel substrate. The first balancer has at least one opening that is opened to an outside of the phosphor wheel device.
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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：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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Patent Agency Ranking
5.发明申请公开(公告)号：US20210124246A1
公开(公告)日：2021-04-29
申请号：US17141503
申请日：2021-01-05
Inventor： Takashi IKEDA , Makoto MAEDA , Yusaku NISHIKAWA
Abstract: A wavelength conversion element includes a first phosphor region and a second phosphor region. The second phosphor region is disposed in a thickness direction of the first phosphor region and has a phosphor particle with a particle size different from a particle size of a phosphor particle positioned in the first phosphor region.
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公开(公告)号：US20210116698A1
公开(公告)日：2021-04-22
申请号：US17134864
申请日：2020-12-28
Inventor： Yusaku NISHIKAWA
Abstract: The first dichroic filter is in a region including a circumference having a first radius, transmits source light and reflects fluorescence. The phosphor is in a region having a predetermined angular width of a region including a circumference having the first radius, and excited by source light to generate fluorescence. The first transmission window is in a region different from the region of the phosphor and transmits incident light. The second dichroic filter is in a region having a predetermined angular width of a region including a circumference having a second radius, and transmits source light and reflects incident light. The second transmission window is in a region different from the second dichroic filter and transmits source light. The diffusion film is on one of the first and second transmission windows, and diffuses incident light.
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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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9.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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