-
公开(公告)号：US12032277B2
公开(公告)日：2024-07-09
申请号：US17864897
申请日：2022-07-14
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.
-
2.发明授权公开(公告)号：US10921697B2
公开(公告)日：2021-02-16
申请号：US16386883
申请日：2019-04-17
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.
-
公开(公告)号：US20240310710A1
公开(公告)日：2024-09-19
申请号：US18675571
申请日：2024-05-28
Inventor： Yusaku Nishikawa , Shigekazu Yamagishi
CPC classification number: G03B21/206 , G03B21/16 , G03B33/08 , H02P29/60
Abstract: A control device according to the present disclosure is a control device for controlling a rotational speed of a phosphor wheel. The device includes an atmospheric pressure sensor that acquires atmospheric pressure information indicating an atmospheric pressure around the phosphor wheel, and a controller that controls the rotational speed of the phosphor wheel based on the atmospheric pressure information.
-
4.发明授权公开(公告)号：US11442348B2
公开(公告)日：2022-09-13
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.
-
公开(公告)号：US10969671B2
公开(公告)日：2021-04-06
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.
-
Patent Agency Ranking
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.
-
公开(公告)号：US11513336B2
公开(公告)日：2022-11-29
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 balancer fixed to the phosphor wheel substrate. The balancer has at least one opening that is open to an outside of the phosphor wheel device.
-
公开(公告)号：US11340445B2
公开(公告)日：2022-05-24
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.
-
9.发明授权公开(公告)号：US11092799B2
公开(公告)日：2021-08-17
申请号：US16567539
申请日：2019-09-11
Inventor： Shigekazu Yamagishi , Yusaku Nishikawa
IPC: G03B21/20 , G02B26/00 , F21V29/503 , F21K9/64 , F21V29/67
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.
-
公开(公告)号：US10996457B2
公开(公告)日：2021-05-04
申请号：US16599561
申请日：2019-10-11
Inventor： Yusaku Nishikawa , Yoshiki Tanaka
Abstract: A wheel apparatus includes a substrate rotatable around a rotation axis, and a plurality of optical elements respectively formed in a plurality of regions different from each other around the rotation axis on the substrate and having wavelength characteristics different from each other. The regions of the plurality of optical elements are adjacent to each other via boundary lines including linear sections. The linear sections of the boundary lines intersect with respective straight lines along the radius of the substrate at the same intersection angle greater than 0 degrees and less than 90 degrees.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.022 seconds)
