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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：US20240248385A1
公开(公告)日：2024-07-25
申请号：US18624778
申请日：2024-04-02
Inventor： Takashi Ikeda , Yoshiki TANAKA , Makoto Maeda , Yusaku Nishikawa , Manabu Okuno
CPC classification number: G03B21/2073 , G03B21/142 , G03B21/2066 , G03B33/12
Abstract: A light source device includes: a light source element emitting first light; a first selective reflection element disposed at a position where the first light is incident, the first selective reflection element transmitting a component of first linear polarized light and reflecting a component of second linear polarized light; a second selective reflection element disposed at a position for receiving incident light that has passed through or been reflected by the first selective reflection element, the second selective reflection element transmitting or reflecting the incident light in accordance with a wavelength region; and a first polarization direction conversion element disposed between the first and second selective reflection element, the first polarization direction conversion element converting the first linear polarized light into elliptical polarized light. The first polarization direction conversion element converts the elliptical polarized light reflected by the second selective reflection element into the second linear polarized light.
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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：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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