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公开(公告)号：US20210391373A1
公开(公告)日：2021-12-16
申请号：US17460398
申请日：2021-08-30
Inventor： SHINYA OKAMOTO , YASUHISA INADA , ATSUSHI ISHIKAWA
IPC: H01L27/146 , H02S10/30 , H01L31/0232 , H01L31/108
Abstract: An optical device includes a nanostructure body which induces surface plasmon resonance when irradiated with light, an oxide layer which is in contact with the nanostructure body, an alloy layer which is in contact with the oxide layer and which is made of an alloy containing a first metal and a second metal that are different in work function from each other, and an n-type semiconductor which is in Schottky contact with the alloy layer.
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公开(公告)号：US20210165096A1
公开(公告)日：2021-06-03
申请号：US17171934
申请日：2021-02-09
Inventor： YUMIKO KATO , SATOSHI SATO , YASUHISA INADA , YOSHIHIDE SAWADA
IPC: G01S17/18 , G01S7/4912
Abstract: A range-information acquiring apparatus includes a light source, an image sensor, a control circuit, and a signal processing circuit. The control circuit causes the light source to emit first light toward a scene and subsequently emit second light toward the scene, the first light having a first spatial distribution, the second light having a second spatial distribution. The control circuit causes at least a portion of plural photodetector elements of the photodetector device to detect first reflected light and second reflected light in the same exposure period, the first reflected light being caused by reflection of the first light from the scene, the second reflected light being caused by reflection of the second light from the scene. The signal processing circuit generates range data based on photodetection data output from the photodetector elements of the photodetector device.
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公开(公告)号：US20210141257A1
公开(公告)日：2021-05-13
申请号：US17151398
申请日：2021-01-18
Inventor： YASUHISA INADA , ATSUSHI ISHIKAWA , YUMIKO KATO
Abstract: An optical scan device includes an optical waveguide array, including a plurality of optical waveguides each of which propagates light along a first direction, that emits a light beam, the plurality of optical waveguides being arranged in a second direction that intersects the first direction, a phase shifter array including a plurality of phase shifters connected separately to each of the plurality of optical waveguides, a control circuit that controls a phase shift amount of each of the plurality of phase shifters and/or inputting of light to each of the plurality of phase shifters and thereby controls a direction and shape of the light beam that is emitted from the optical waveguide array, a photodetector that detects the light beam reflected by a physical object, and a signal processing circuit that generates distance distribution data on the basis of output from the photodetector.
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公开(公告)号：US20190004393A1
公开(公告)日：2019-01-03
申请号：US16108129
申请日：2018-08-22
Inventor： AKIRA HASHIYA , YASUHISA INADA , TAKU HIRASAWA , YOSHIKAZU YAMAOKA , NOBUAKI NAGAO
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：US20180372951A1
公开(公告)日：2018-12-27
申请号：US16116499
申请日：2018-08-29
Inventor： AKIRA HASHIYA , YASUHISA INADA , TAKU HIRASAWA , YOSHIKAZU YAMAOKA , NOBUAKI NAGAO
Abstract: An optical scanning device includes a waveguide array including a plurality of waveguides arranged in a first direction. Each waveguide includes: an optical waveguide layer that propagates light supplied to the waveguide in a second direction intersecting the first direction; a first mirror having a first reflecting surface intersecting a third direction; and a second mirror having a second reflecting surface that faces the first reflecting surface. The optical waveguide layer is located between the first and second mirrors and has a variable thickness and/or a variable refractive index for the light. The width of the first mirror and the width of the second mirror are each larger than the width of the optical waveguide layer. The first mirror has a higher light transmittance than the second mirror and allows part of the light propagating through the optical waveguide layer to be emitted in the third direction.
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Patent Agency Ranking
公开(公告)号：US20180217258A1
公开(公告)日：2018-08-02
申请号：US15840468
申请日：2017-12-13
Inventor： TAKU HIRASAWA , YASUHISA INADA , AKIRA HASHIYA
Abstract: An imaging system includes a light-emitting device, an image sensor, and a control circuit. The light-emitting device includes a light source, a first waveguide that propagates light from the light source by means of total reflection, a second waveguide, and a first adjustment element. The control circuit causes the light source to repeatedly emit light pulses. Further, the control circuit causes at least some of the plurality of photo-detection cells to accumulate the signal charge in synchronization with the emission of the light pulses and thereby causes the image sensor to generate every first period of time a frame based on the signal charge thus accumulated. Furthermore, the control circuit causes the first adjustment element to change the direction of the emitted light from the second waveguide every second period of time that is shorter than or equal to half the first period of time.
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公开(公告)号：US20160327739A1
公开(公告)日：2016-11-10
申请号：US15214803
申请日：2016-07-20
Inventor： YOSHITAKA NAKAMURA , TAKU HIRASAWA , YASUHISA INADA , AKIRA HASHIYA , MITSURU NITTA , TAKEYUKI YAMAKI
CPC classification number: G02B6/124 , F21V9/30 , G02B5/1866 , G02B6/0003 , G02B6/0033 , G02B6/0036 , G02B6/0038 , G02B6/34 , G03B21/204 , H01L2933/0083
Abstract: A light-emitting device according to an embodiment includes a photoluminescent layer, a light-transmissive planarization layer that is in contact with the photoluminescent layer and covers a surface of the photoluminescent layer, and a light-transmissive layer that is located on the planarization layer and comprises a submicron structure. The submicron structure has projections or recesses. Light emitted from the photoluminescent layer includes first light having a wavelength λa in air. A distance Dint between adjacent projections or recesses and a refractive index nwav-a of the photoluminescent layer for the first light satisfy λa/nwav-a
Abstract translation: 根据实施例的发光器件包括光致发光层，与光致发光层接触并覆盖光致发光层的表面的光透射平坦化层和位于平坦化层上的透光层 并且包括亚微米结构。 亚微米结构具有突起或凹陷。 从光致发光层发射的光包括在空气中具有波长λa的第一光。 相邻的凸部或凹部之间的距离Dint和第一光的光致发光层的折射率nwav-a满足λa/ nwav-a
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公开(公告)号：US20160327716A1
公开(公告)日：2016-11-10
申请号：US15215595
申请日：2016-07-21
Inventor： YASUHISA INADA , TAKU HIRASAWA , YOSHITAKA NAKAMURA , AKIRA HASHIYA , MITSURU NITTA , TAKEYUKI YAMAKI
IPC: F21V8/00
CPC classification number: G02B6/0003 , F21S2/00 , G02B5/18 , G02B6/00 , G02B6/0038 , G02B6/0055 , H01L27/156 , H01L33/22 , H01L33/46 , H01L33/50
Abstract: A light-emitting device includes a photoluminescent layer, a light-transmissive layer located on the photoluminescent layer, and a multilayer mirror layered together with the photoluminescent layer and the light-transmissive layer. At least one of the photoluminescent layer and the light-transmissive layer has a submicron structure. The submicron structure has at least projections or recesses arranged perpendicular to the thickness direction of the photoluminescent layer. The photoluminescent layer emits light including 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
Abstract translation: 发光器件包括光致发光层，位于光致发光层上的透光层和与光致发光层和透光层一起分层的多层镜。 光致发光层和透光层中的至少一个具有亚微米结构。 亚微米结构至少具有垂直于光致发光层的厚度方向布置的凸起或凹陷。 光致发光层发射包括在空气中具有波长λa的第一光的光。 相邻的凸部或凹部之间的距离Dint以及第一光的光致发光层的折射率nwav-a满足λa/ nwav-a
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公开(公告)号：US20160327715A1
公开(公告)日：2016-11-10
申请号：US15215592
申请日：2016-07-21
Inventor： YASUHISA INADA , TAKU HIRASAWA , MITSURU NITTA , AKIRA HASHIYA , TAKEYUKI YAMAKI
IPC: F21V8/00
CPC classification number: G02B6/0003 , G02B6/00 , G02B6/0035 , G02B6/0036 , G02B6/0038 , G02B6/0053 , G02B6/0058 , G02B6/0076 , G02B6/0083 , G02B6/0085 , G03B21/204 , H01L33/505 , H01L33/58
Abstract: A light-emitting device includes a photoluminescent layer and a light-transmissive layer located on the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a submicron structure having at least projections or recesses arranged perpendicular to the thickness direction of the photoluminescent layer. At least one of the photoluminescent layer and the light-transmissive layer has a light emitting surface. The first light has a wavelength λa in air. A distance Dint between adjacent projections or recesses and a refractive index nwav-a of the photoluminescent layer for the first light satisfy λa/nwav-a
Abstract translation: 发光器件包括光致发光层和位于光致发光层上的透光层。 光致发光层和透光层中的至少一个具有至少具有垂直于光致发光层的厚度方向布置的突起或凹陷的亚微米结构。 光致发光层和透光层中的至少一个具有发光面。 第一光在空气中具有波长λa。 相邻的凸部或凹部之间的距离Dint和第一光的光致发光层的折射率nwav-a满足λa/ nwav-a
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公开(公告)号：US20160265746A1
公开(公告)日：2016-09-15
申请号：US15060564
申请日：2016-03-03
Inventor： TAKU HIRASAWA , YASUHISA INADA , AKIRA HASHIYA , MITSURU NITTA , TAKEYUKI YAMAKI
CPC classification number: G02B6/005 , G02B6/0038 , H01L33/508 , H01L2933/0041
Abstract: A display apparatus includes an excitation light source that outputs excitation light; a light-emitting device including a photoluminescent layer that receives the 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 shutter on an optical path of the light emitted from the photoluminescent layer. 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.
Abstract translation: 显示装置包括：输出激励光的激发光源; 包括接收激发光并发射包括在空气中具有波长λa的第一光的光的光致发光器件的发光器件和位于光致发光层上或附近的透光层; 以及在从光致发光层发射的光的光路上的光学快门。 表面结构限定在光致发光层和透光层中的至少一个上，并且表面结构具有突起或凹部或两者，并且限制了空气中具有波长λa的第一光的方向角。
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