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公开(公告)号：US09595648B2
公开(公告)日：2017-03-14
申请号：US14783239
申请日：2014-01-17
Inventor： Yasuhisa Inada , Kazuyuki Yamae , Akira Hashiya
CPC classification number: H01L33/58 , G02B5/0221 , H01L33/22 , H01L51/5275 , H01L2251/5315 , H01L2251/5369
Abstract: An illuminator includes a light-emitting element and a light extraction sheet which transmits light occurring from the light-emitting element. The light-emitting element includes a first electrode having a light transmitting property, a second electrode, and an emission layer between the first and second electrodes. The light extraction sheet includes a light-transmitting substrate having a first principal face and a second principal face, a first light extraction structure on the first principal face side of the light-transmitting substrate, and a second light extraction structure on the second principal face side of the light-transmitting substrate. The first light extraction structure includes a low-refractive index layer and a high-refractive index layer. The second light extraction structure is arranged so that light which is transmitted through the light-transmitting substrate and arrives at an incident angle of 40 degrees to 60 degrees has an average transmittance of 42% or more.
Abstract translation: 照明器包括发光元件和透光从发光元件发出的光的光提取片。 发光元件包括具有透光性的第一电极，第二电极和在第一和第二电极之间的发射层。 光提取片包括具有第一主面和第二主面的透光性基板，在透光性基板的第一主面侧的第一光提取结构以及第二主面上的第二光提取结构 侧的透光性基板。 第一光提取结构包括低折射率层和高折射率层。 第二光提取结构被布置成使得透射透光基板并以40度至60度的入射角到达的光的平均透射率为42％以上。
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22.发明申请公开(公告)号：US20150085494A1
公开(公告)日：2015-03-26
申请号：US14396946
申请日：2013-07-30
Inventor： Yasuhisa Inada
CPC classification number: G02B27/425 , B29D11/00798 , F21V11/00 , F21V13/10 , G02B5/02 , G02B5/021 , G02B5/0215 , G02B5/18 , G02B5/30 , H01L51/5268 , H01L51/5275
Abstract: A light-diffusing layer is provided for diffusing incident light by diffracting at least a portion of the incident light, and the diffuse light diffused by the light-diffusing layer is diffused about a direction different from the emission direction of non-diffused light that passes through the light-diffusing layer without being diffused.
Abstract translation: 通过衍射入射光的至少一部分来扩散入射光的光扩散层，并且由光漫射层扩散的漫射光在与通过的非扩散光的发射方向不同的方向上扩散 通过光漫射层而不被扩散。
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公开(公告)号：US12212112B2
公开(公告)日：2025-01-28
申请号：US17546153
申请日：2021-12-09
Inventor： Tasuku Nakamura , Yasuhisa Inada
IPC: G01J3/02 , G01J3/10 , G01J3/427 , G01J3/433 , H01S3/00 , H01S3/086 , H01S3/10 , H01S3/23 , H01S5/00 , G01J3/42 , H01S3/13 , H01S5/10
Abstract: A dual optical frequency comb light-emitting device includes a first optical-frequency-comb laser source that includes a first laser resonator having a first optical path length, a second optical-frequency-comb laser source that includes a second laser resonator having a second optical path length different from the first optical path length, and an optical coupler that causes a first portion of first optical-frequency-comb laser light emitted from the first laser resonator to enter the second laser resonator. The first optical-frequency-comb laser source outputs a second portion of the first optical-frequency-comb laser light to an outside. The second optical-frequency-comb laser source outputs second optical-frequency-comb laser light emitted from the second laser resonator to the outside.
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公开(公告)号：US12074184B2
公开(公告)日：2024-08-27
申请号：US17349718
申请日：2021-06-16
Inventor： Atsushi Ishikawa , Yasuhisa Inada
CPC classification number: H01L27/1462 , G01J3/26 , G01J3/2823 , G01J3/36 , G02B5/201 , G02B5/28 , H01L27/14627 , H01L27/14645 , H04N25/135
Abstract: A light detecting device includes: a filter array including filters two-dimensionally arrayed and an image sensor including light detection elements. Each of first and second filters included in the filters includes a first reflective layer, a second reflective layer, and an intermediate layer therebetween and has a resonance structure having resonant modes whose orders are different from each other. A refractive index and/or a thickness of the intermediate layer in the first and second filters is different depending on the filter. A transmission spectrum of each of the first and second filters has local maximum value of transmittance at each of wavelengths included in a wavelength region, and the wavelengths correspond to the resonant modes, respectively. The image sensor is disposed at a position where the image senor receives passing light that passes through the filter array, to detect components in the wavelengths included in the passing light.
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公开(公告)号：US11953726B2
公开(公告)日：2024-04-09
申请号：US17471687
申请日：2021-09-10
Inventor： Kazuki Nakamura , Yasuhisa Inada
CPC classification number: G02B6/124 , G01S7/4817 , G01S17/89 , G02B6/12033 , G02F1/295 , G02B2006/12104 , G02F2201/302
Abstract: An optical device includes a first waveguide extending in a first direction and a second waveguide connected to the first waveguide. The second waveguide includes a first mirror, a second mirror, and an optical waveguide layer. At least either the first waveguide or the second waveguide has one or more gratings in a part of a connection region in which the first mirror, the second mirror, and the first waveguide overlap one another when seen from an angle parallel with a direction perpendicular to a first reflecting surface of the first mirror. The one or more gratings is at a distance that is longer than at least either a thickness of the first mirror or a thickness of the second mirror in the first direction from an end of the first mirror or the second mirror that is in the connection region.
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Patent Agency Ranking
公开(公告)号：US11644540B2
公开(公告)日：2023-05-09
申请号：US16568247
申请日：2019-09-12
Inventor： Nobuaki Nagao , Yoshikazu Yamaoka , Yasuhisa Inada , Akira Hashiya , Taku Hirasawa
CPC classification number: G01S7/4817 , G01S17/06 , G02F1/295 , G02F1/291
Abstract: An optical scanning device includes: first and second mirrors; an optical waveguide layer disposed between the first and second mirrors; a pair of electrodes sandwiching the optical waveguide layer; and a driving circuit that applies a voltage to the pair of electrodes. The first mirror emits part of light propagating through the optical waveguide layer to the outside. The optical waveguide layer contains a liquid crystal material or an electrooptical material. The alignment direction of the liquid crystal material or the direction of a polarization axis of the electrooptical material is parallel or perpendicular to the direction in which the optical waveguide layer extends. The driving circuit applies the voltage to the pair of electrodes to change the refractive index of the liquid crystal material or the electrooptical material to thereby change the light emission direction.
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公开(公告)号：US20220236378A1
公开(公告)日：2022-07-28
申请号：US17722448
申请日：2022-04-18
Inventor： Yumiko Kato , Yasuhisa Inada , Toshiyasu Sugio , Noritaka Iguchi
IPC: G01S7/487 , G01S17/894
Abstract: A sensing device includes a light source, a light-receiving device including at least one light-receiving element that performs photoelectric conversion, and a processing circuit that controls the light source and the light-receiving device. The processing circuit causes the light source to emit light to a scene at least once, causes the light-receiving device to receive reflected light in each of a plurality of exposure periods, the reflected light being resulting from the emitted light, generates, based on received-light data from the light-receiving device, luminance data that indicates distributions of amounts of reflected light corresponding to the respective exposure periods and that are used for generating distance data for the scene, and outputs the luminance data and timing data indicating timings of the respective exposure periods.
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公开(公告)号：US11256156B2
公开(公告)日：2022-02-22
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：US11149198B2
公开(公告)日：2021-10-19
申请号：US15933606
申请日：2018-03-23
Inventor： Nobuaki Nagao , Mitsuru Nitta , Yasuhisa Inada
IPC: C09K11/77 , F21V9/30 , A61B1/06 , A61B1/07 , H01S5/02251 , H01S5/02253 , C09K11/08 , C09K11/62 , F21V8/00 , H01S3/00 , H01S3/16 , H01S3/23 , H01S5/30 , H04N5/225 , H04N9/04 , F21W131/105 , H01S5/00
Abstract: A fiber light source includes a solid-state light source, a wavelength convertor, and an optical fiber. The solid-state light source is configured to emit first light, the first light including blue light with a peak wavelength in a range of 430 to 470 nm, inclusive, and green light with a peak wavelength in a range of 480 to 550 nm, inclusive. The wavelength convertor is disposed on the light output side or the light incident side of the optical fiber and contains a red phosphor. The red phosphor includes Ce as a luminescent center, and is excited by at least part of the green light to emit second light. The second light has a spectrum with a peak wavelength in a range of 600 to 700 nm, inclusive. The red phosphor contains a nitride or an oxynitride as a host material.
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公开(公告)号：US10775506B2
公开(公告)日：2020-09-15
申请号：US15840468
申请日：2017-12-13
Inventor： Taku Hirasawa , Yasuhisa Inada , Akira Hashiya
IPC: G01S17/86 , G02F1/295 , G01S17/10 , G01S7/481 , G01S7/4865 , G01S17/89 , G01S17/42 , G01S7/4863
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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