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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：US09640783B2
公开(公告)日：2017-05-02
申请号：US14846663
申请日：2015-09-04
Inventor： Masahito Yamana , Tetsushi Konda , Tatsuya Okuno
IPC: H01L51/52
CPC classification number: H01L51/5275 , H01L51/5268 , H01L51/5271
Abstract: A light-emitting device according to an aspect of the present disclosure includes a light transmissive first electrode layer, a light transmissive second electrode layer, an electroluminescent layer between the first electrode layer and the second electrode layer, and a reflective layer located on a side opposite to the electroluminescent layer with respect to the second electrode layer. The reflective layer includes a base material having a refractive index equal to or higher than a refractive index of the electroluminescent layer, and fillers each having a refractive index different from that of the base material.
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公开(公告)号：US10174909B2
公开(公告)日：2019-01-08
申请号：US15765261
申请日：2016-10-06
Inventor： Masahito Yamana , Shintaro Hayashi
Abstract: An optical member includes: a phosphor layer including a phosphor that converts a wavelength of a portion of light from a light source which is incident on an incidence face; and a microlens array that causes the portion of light wavelength-converted by the phosphor layer and the other portion of light transmitted through the phosphor layer to emerge from an emission face, in which a diffractive lens array for diffracting the portion of light wavelength-converted and the other portion of light transmitted is provided on the emission face of the microlens array, and a pitch of the diffractive lens array is different for each of predetermined sections.
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公开(公告)号：US11493185B2
公开(公告)日：2022-11-08
申请号：US17423081
申请日：2019-12-18
Inventor： Noboru Iizawa , Masahito Yamana , Kazuyuki Yamae , Tetsuya Nishi
IPC: F21V9/30 , F21V7/00 , F21V8/00 , F21V29/502
Abstract: An illuminating device according to the present disclosure is of a reflective type and uses a laser beam. The illuminating device includes: a laser element that emits a laser beam; an optical fiber that transmits the laser beam emitted by the laser element; a phosphor layer that converts a wavelength of light incident on one of surfaces and emits the light through the one of the surfaces; and an optical component that causes reflected light of the laser beam transmitted through the optical fiber to be incident on the one of the surfaces of the phosphor layer. With the illuminating device, an intensity distribution of the light incident on the one of the surfaces of the phosphor layer is sparse at a central region.
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Patent Agency Ranking
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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公开(公告)号：US10352545B2
公开(公告)日：2019-07-16
申请号：US15765260
申请日：2016-10-06
Inventor： Masahito Yamana , Noboru Iizawa , Yoshiyuki Nakano
IPC: F21V21/00 , F21V29/502 , F21V9/30 , G02B7/00 , G03B21/16 , F21V5/00 , G02B5/18 , F21Y115/10 , F21V13/02 , F21W131/20 , F21Y115/30
Abstract: A wavelength conversion device includes: a light source that emits light having a predetermined wavelength included in a wavelength range from ultraviolet light to visible light; a phosphor layer that converts the wavelength of light from the light source which is incident on an incidence face thereof; and an optical component that is disposed between the light source and the phosphor layer, and projects light emitted by the light source onto the incidence face of the phosphor layer in a ring shape.
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公开(公告)号：US09373810B2
公开(公告)日：2016-06-21
申请号：US14640923
申请日：2015-03-06
Inventor： Masahito Yamana , Manabu Nakata , Toshihiro Higuchi
IPC: H01L51/52
CPC classification number: H01L51/5221 , H01L51/5206 , H01L51/5209 , H01L51/5225 , H01L51/5234 , H01L51/5268 , H01L51/5271 , H01L2251/5361 , H01L2251/5369 , H01L2251/558
Abstract: An organic EL element according to the present disclosure includes a first electrode having a light-transmission property, a functional layer which is located on the first electrode and which includes a light-emitting layer, and a second electrode which is located on the functional layer, the second electrode having an opening which exposes a part of the functional layer, the second electrode including a scatter reflection surface which scatters and reflects a light emitted from the light-emitting layer, the scatter refection surface opposing to the functional layer.
Abstract translation: 根据本公开的有机EL元件包括具有透光性的第一电极，位于第一电极上并且包括发光层的功能层和位于功能层上的第二电极 所述第二电极具有露出所述功能层的一部分的开口，所述第二电极包括散射和反射从所述发光层发射的光的散射反射表面，所述散射反射表面与所述功能层相对。
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公开(公告)号：US10912452B2
公开(公告)日：2021-02-09
申请号：US15951511
申请日：2018-04-12
Inventor： Masahito Yamana , Noboru Iizawa , Shintaro Hayashi
Abstract: An illumination light guiding device includes a phosphor layer that is disposed on another surface opposite to one surface of a board, and converts the wavelengths of a plurality of light beams transmitted through the board and incident on one surface of the phosphor layer, and an emission-side fiber including a plurality of optical fibers that are provided so as to be erected side by side on another surface opposite to one surface of the phosphor layer, each optical fiber guiding a different one of the plurality of light beams having wavelengths converted by the phosphor layer.
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