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公开(公告)号：US11256043B2
公开(公告)日：2022-02-22
申请号：US16984746
申请日：2020-08-04
Inventor： Akira Hashiya , Yasuhisa Inada , Taku Hirasawa
Abstract: An optical device includes a first waveguide that propagates light in a first direction; and a second waveguide including a first mirror, a second mirror, and an optical waveguide layer. The first mirror extends in the first direction and has a first reflecting surface, and the second mirror extends in the first direction and has a second reflecting surface. The optical waveguide layer is located between the first and second mirrors and propagates the light in the first direction. A forward end portion of the first waveguide is disposed inside the optical waveguide layer. In a region in which the first and second waveguides overlap each other when viewed in a direction perpendicular to the first reflecting surface, at least part of the first waveguide and/or at least part of the second waveguide includes at least one grating whose refractive index varies periodically in the first direction.
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公开(公告)号：US10649073B2
公开(公告)日：2020-05-12
申请号：US16596072
申请日：2019-10-08
Inventor： Yasuhisa Inada , Taku Hirasawa , Akira Hashiya
Abstract: An optical scanning system including an optical scanning device, and a photoreceiver device. The optical scanning device includes: a first waveguide array including a plurality of first waveguides; and a first phase shifter for adjusting phases of light propagating through the plurality of first waveguides to change an emission direction of emission light from the plurality of first waveguides. The photoreceiver device includes: a second waveguide array including a plurality of second waveguides configured to receive reflected light and propagate the received reflected light; and a second phase shifter for adjusting phases of the received reflected light propagating through the plurality of second waveguides to change a reception direction of the reflected light received by the plurality of second waveguides. An array pitch of the plurality of first waveguides in the optical scanning device differs from an array pitch of the plurality of second waveguides in the photoreceiver device.
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公开(公告)号：US10182702B2
公开(公告)日：2019-01-22
申请号：US15060574
申请日：2016-03-03
Inventor： Nobuaki Nagao , Taku Hirasawa , Yasuhisa Inada , Mitsuru Nitta , Akira Hashiya , Yasuhiko Adachi
Abstract: A light-emitting apparatus includes; a light-emitting device including a photoluminescent layer that receives excitation light and emits light including first light having a wavelength λa in air, and a light-transmissive layer located on or near the photoluminescent layer; and an optical fiber that receives the light from the photoluminescent layer at one end of the optical fiber and emits the received light from the other end thereof. A surface structure is defined on at least one of the photoluminescent layer and the light-transmissive layer, and the surface structure has projections or recesses or both and limits a directional angle of the first light having the wavelength λa in air.
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公开(公告)号：US20180267150A1
公开(公告)日：2018-09-20
申请号：US15901896
申请日：2018-02-22
Inventor： Yasuhisa Inada , Taku Hirasawa , Akira Hashiya
CPC classification number: G01S7/4817 , G01S7/4818 , G01S17/42 , G01S17/933 , G01S17/936 , G02B6/0016 , G02B6/005 , G02B6/0055 , G02B6/0078 , G02B6/1225
Abstract: An optical scanning system comprises an optical scanning device and a photoreceiver device. The optical scanning device includes a first waveguide array including a plurality of first waveguides through which light beams propagate and from which the light beams are emitted as emission light in an emission direction crossing a propagation direction of the light beams. The photoreceiver device includes a second waveguide array including a plurality of second waveguides disposed in areas on which, when the emission light from the plurality of first waveguides is reflected as reflected light from a target object, the reflected light is incident, the plurality of second waveguides configured to receive the reflected light to propagate the received reflected light as propagating light beams. An array pitch of the plurality of first waveguides in the optical scanning device differs from an array pitch of the plurality of second waveguides in the photoreceiver device.
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公开(公告)号：US09882100B2
公开(公告)日：2018-01-30
申请号：US15216669
申请日：2016-07-21
Inventor： Akira Hashiya , Taku Hirasawa , Yasuhisa Inada
CPC classification number: H01L33/505 , H01L33/44 , H01L33/508
Abstract: A light-emitting device includes: a photoluminescent layer that emits light; and a light-transmissive layer on which the emitted light is to be incident. At least one of the photoluminescent layer and the light-transmissive layer defines a surface structure. The surface structure has projections and/or recesses to limit a directional angle of the emitted light. The photoluminescent layer and the light-transmissive layer are curved.
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Patent Agency Ranking
公开(公告)号：US09379359B2
公开(公告)日：2016-06-28
申请号：US14772599
申请日：2014-02-27
Inventor： Kazuyuki Yamae , Yasuhisa Inada , Akira Hashiya
CPC classification number: H01L51/5275 , H01L51/504 , H01L51/5206 , H01L51/5221 , H01L51/5265 , H01L51/5268 , H01L2251/558
Abstract: The present disclosure relates to an organic electroluminescence element including: a substrate having a light transmissive property; a light diffusion layer; a light transmissive electrode; a light reflective electrode; and a light emitting layer. With regard to the first light emitting layer being the first closest light emitting layer to the light reflective electrode, the relation defined by following expression (2) is satisfied, [ FORMULA 1 ] ϕ ( λ m ) × λ m 4 π + l + 0.1 2 λ m ≤ n m ( λ m ) × d m ≤ ϕ ( λ m ) × λ m 4 π + l + 0.5 2 λ m ( 2 ) wherein, λm represents the weighted average emission wavelength, Ø(λm) represents the phase shift, nm(λm) represents the average refractive index of a medium filling a space between the light reflective electrode and the first light emitting layer, and dm represents the distance from the light reflective electrode to the first light emitting layer. m is equal to 1.1 is an integer equal to or more than 0.
Abstract translation: 本公开涉及一种有机电致发光元件，包括：具有透光性的基板; 光扩散层 透光电极; 光反射电极; 和发光层。 关于第一发光层是与光反射电极的第一最近的发光层，满足以下表达式（2）定义的关系，[FORMULA1]＆phis; （λm）×λm 4＆pgr; + l + 0.12λm≤nm（λm）×d m≤＆phis; （λm）×λm 4＆pgr; + 1 + 0.52λm（2）其中，λm表示加权平均发射波长，λ（λm）表示相移，nm（λm）表示填充光反射电极之间的空间的介质的平均折射率 和第一发光层，dm表示从光反射电极到第一发光层的距离。 m等于1.1是等于或大于0的整数。
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公开(公告)号：US11835840B2
公开(公告)日：2023-12-05
申请号：US17574493
申请日：2022-01-12
Inventor： Akira Hashiya , Yasuhisa Inada , Taku Hirasawa , Yoshikazu Yamaoka , Nobuaki Nagao
CPC classification number: G02F1/295 , G01S7/4817 , G01S17/42 , G01S17/89 , G02B6/122 , G02F1/2955 , G02B2006/12104 , G02F2201/302
Abstract: An optical scanning device includes: a first waveguide that propagates light by total reflection; and a second waveguide. The second waveguide includes: a first multilayer reflective film; a second multilayer reflective film that faces the first multilayer reflective film; and a first optical waveguide layer directly connected to the first waveguide and located between the first and second multilayer reflective films. The first optical waveguide layer has a variable thickness and/or a variable refractive index and propagates the light transmitted through the first waveguide. The first multilayer reflective film has a higher light transmittance than the second multilayer reflective film and allows part of the light propagating through the first optical waveguide layer to be emitted to the outside. By changing the thickness of the first optical waveguide layer and/or its refractive index, the direction of the part of the light emitted from the second waveguide is changed.
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公开(公告)号：US10359155B2
公开(公告)日：2019-07-23
申请号：US15206273
申请日：2016-07-10
Inventor： Taku Hirasawa , Yasuhisa Inada , Akira Hashiya , Nobuaki Nagao , Akira Tsujimoto
IPC: F21V9/30 , F21K9/64 , H01S5/00 , F21V5/04 , F21Y115/10 , F21Y115/30
Abstract: A light-emitting apparatus includes an excitation light source that emits first light; a light-emitting device on an optical path of the first light, the light-emitting device emitting second light having a wavelength in air; and a first converging lens on an optical path of the second light. The light-emitting device comprises: a photoluminescent layer that emits the second light by being excited by the first light; and a light-transmissive layer on the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a surface structure comprising projections or recesses arranged perpendicular to a thickness direction of the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a light emitting surface perpendicular to the thickness direction, the second light emitted from the light emitting surface. The surface structure limits the directional angle of the second light emittied from the light emitting surface.
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公开(公告)号：US10209509B1
公开(公告)日：2019-02-19
申请号：US16015225
申请日：2018-06-22
Inventor： Yasuhisa Inada , Akira Hashiya , Taku Hirasawa
Abstract: An optical scanning device includes: a first mirror; a second mirror; two non-waveguide regions; an optical waveguide region; and a first adjusting element. The optical waveguide region propagates light. The optical waveguide region and the two non-waveguide regions include respective first regions in which a common material exists. The optical waveguide region or each of the two non-waveguide regions further includes a second region in which a first material having a refractive index different from a refractive index of the common material exists. The first mirror allows part of the light propagating through the optical waveguide region to be emitted through the first mirror. The first adjusting element changes at least either the average refractive index of the optical waveguide region or a thickness of the optical waveguide region to change a direction of the light emitted through the first mirror.
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公开(公告)号：US09890912B2
公开(公告)日：2018-02-13
申请号：US15214837
申请日：2016-07-20
Inventor： Akira Hashiya , Taku Hirasawa , Yasuhisa Inada , Yoshitaka Nakamura , Mitsuru Nitta , Takeyuki Yamaki
CPC classification number: F21K9/64 , F21S2/00 , G02B5/1809 , G02B5/1861 , G02B6/00 , H01L33/505 , H01L33/508 , H01L33/58
Abstract: A light-emitting apparatus includes a light-emitting device and an excitation light source. The light-emitting device includes a photoluminescent layer, a light-transmissive layer. At least one of the photoluminescent layer and the light-transmissive layer has a submicron structure having at least projections or recesses. Light emitted from the photoluminescent layer includes first light having a wavelength λa in air. The distance Dint between adjacent projections or recesses and the refractive index nwav-a of the photoluminescent layer for the first light satisfy λa/nwav-a
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