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公开(公告)号：US20240004042A1
公开(公告)日：2024-01-04
申请号：US18468720
申请日：2023-09-17
Inventor： HIROYUKI TAKAGI , YASUHISA INADA , YASUHIRO KABETANI , YUMIKO KATO , KENJI NARUMI , KOHEI KIKUCHI
IPC: G01S7/4911 , G01S17/34 , G01S7/4912
CPC classification number: G01S7/4911 , G01S17/34 , G01S7/4917 , G01S17/931
Abstract: A measuring device includes: a light source; an interference optical system that separates light into reference light and irradiation light, generates interference light by causing interference between the reference light and reflected light generated by reflection of the irradiation light on an object; a photodetector that receives the interference light and outputs a signal corresponding to an intensity of the interference light; and a processing circuit that controls the light source and generates and outputs data on a distance and/or velocity of the object based on the signal outputted from the photodetector, in which the processing circuit causes the light source to emit light having a frequency that changes with time within a first frequency range in a first mode, and causes the light source to emit light having a frequency that changes with time within a second frequency range different from the first frequency range in the second mode.
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公开(公告)号：US20230341558A1
公开(公告)日：2023-10-26
申请号：US18342768
申请日：2023-06-28
Inventor： YUMIKO KATO , TORU MATSUNOBU , YASUHISA INADA
IPC: G01S17/894 , G06T7/593 , G06T7/564 , G01S7/4865 , G01S17/10 , G01S7/481
CPC classification number: G01S17/894 , G06T7/593 , G06T7/564 , G01S7/4865 , G01S17/10 , G01S7/4817 , G06T2207/10028
Abstract: A distance measurement system comprises distance measurement devices, including a LiDAR sensor and at least one other distance measurement device, and a storage device storing three-dimensional point cloud data based on distance measurement data acquired by each of the distance measurement devices. The LiDAR sensor comprises a light-emitting device that can change an emission direction of a light beam, a light-receiving device that detects reflected light from the light beam and outputs a signal indicating a detection result, and a processing circuit that controls the light-emitting device and the light-receiving device to generate the distance measurement data on a basis of the signal outputted from the light-receiving device. The processing circuit references the point cloud data to determine at least one empty area in the point cloud data, and measures distance in the empty area by causing the light-emitting device to emit the light beam toward the empty area.
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公开(公告)号：US20230078063A1
公开(公告)日：2023-03-16
申请号：US18057757
申请日：2022-11-21
Inventor： YUMIKO KATO , KENJI NARUMI , YASUHISA INADA
IPC: G01S17/931 , G01S17/89 , G06T7/521
Abstract: A distance measurement device is used in a system including two or more distance measurement devices having distance measurement ranges that are adjacent to each other or partially overlap each other. The distance measurement device includes: a light emission device; a light reception device which detect reflected light and to output a detection signal; and a processing circuit which determine the position of the target object. The processing circuit generates, based on the determined position of the target object, setting data defining an irradiation range of light to be emitted from the other distance measurement device and transmits the setting data to the other distance measurement device, and controls light emission from the light emission device in accordance with setting data defining an irradiation range of light to be emitted from the light emission device, when having received the setting data from the other distance measurement device.
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公开(公告)号：US20220365403A1
公开(公告)日：2022-11-17
申请号：US17810835
申请日：2022-07-06
Inventor： TAKAIKI NOMURA , KAZUKI NAKAMURA , AKIRA HASHIYA , YASUHISA INADA
Abstract: An optical device includes a first substrate with a first surface spreading in a first direction and a second direction intersecting the first direction, a second substrate with a second surface facing the first surface, a film bonded to the first surface and/or the second surface through a siloxane bond, and at least one optical guide layer positioned between the first substrate and the second substrate, the optical guide layer including a dielectric member in contact with the film and guiding light in the first direction and/or the second direction.
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公开(公告)号：US20220113482A1
公开(公告)日：2022-04-14
申请号：US17556715
申请日：2021-12-20
Inventor： KAZUKI NAKAMURA , YASUHISA INADA
Abstract: A light emitting device includes a waveguide element including a first mirror that is light transmissive, a second mirror that faces the first mirror, and an optical waveguide layer located between the first mirror and the second mirror, the waveguide element allowing light input to the optical waveguide layer to propagate along a first direction and to be emitted through the first mirror; a first photodetector that is located on a path of light to be input to the optical waveguide layer or on another path branching off from the path and outputs a first signal according to an amount of received light; and a second photodetector that is located on a path of light that has propagated through the optical waveguide layer along the first direction and passed the optical waveguide layer and outputs a second signal according to an amount of received light.
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Patent Agency Ranking
公开(公告)号：US20210356565A1
公开(公告)日：2021-11-18
申请号：US17391051
申请日：2021-08-02
Inventor： MASAHIKO TSUKUDA , TAKAIKI NOMURA , YASUHISA INADA
IPC: G01S7/481 , G02F1/13 , G02F1/1343 , G02F1/133 , G02F1/1335
Abstract: An optical device includes: a first mirror having translucency and including a first reflecting surface extending along a first direction and a second direction intersecting the first direction; a second mirror including a second reflecting surface facing the first reflecting surface; an optical waveguide layer located between the first mirror and the second mirror, the optical waveguide layer including a plurality of non-waveguide areas laid side-by-side along the second direction and one or more optical waveguide areas located between the plurality of non-waveguide areas, the optical waveguide areas containing a liquid crystal material, having a higher average refractive index than do the plurality of non-waveguide areas, and propagating light along the first direction; and two electrode layers facing each other across the optical waveguide layer, at least one of the two electrode layers including a plurality of electrodes laid side-by-side along the second direction.
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公开(公告)号：US20180216002A1
公开(公告)日：2018-08-02
申请号：US15933606
申请日：2018-03-23
Inventor： NOBUAKI NAGAO , MITSURU NITTA , YASUHISA INADA
IPC: C09K11/77 , C09K11/62 , C09K11/08 , A61B1/06 , A61B1/07 , H04N5/225 , H04N9/04 , F21V8/00 , H01S5/00 , H01S5/30 , H01S3/16 , H01S5/022 , H01S3/23 , H01S3/00
CPC classification number: C09K11/7774 , A61B1/0653 , A61B1/0684 , A61B1/07 , C09K11/0883 , C09K11/62 , F21V9/30 , F21W2131/105 , G02B6/0006 , G02B6/0008 , H01S3/005 , H01S3/1611 , H01S3/1643 , H01S3/23 , H01S5/005 , H01S5/02284 , H01S5/02288 , H01S5/3013 , H04N5/2256 , H04N9/045 , H04N2005/2255
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：US20170062659A1
公开(公告)日：2017-03-02
申请号：US15219462
申请日：2016-07-26
Inventor： YASUHISA INADA , TAKU HIRASAWA
CPC classification number: H01L33/505 , H01L33/44 , H01L33/508
Abstract: A light-emitting device includes: a light-transmissive layer having a first surface; and a photoluminescent layer located on the first surface. The photoluminescent layer has a second surface facing the light-transmissive layer and a third surface opposite the second surface, and emits light containing first light having a wavelength X, in air from the third surface. The photoluminescent layer has a first surface structure located on the third surface, the first surface structure having an array of projections. The light-transmissive layer has a second surface structure located on the first surface, the second surface structure having projections corresponding to the projections of the first surface structure. The first surface structure and the second surface structure limit a directional angle of the first light emitted from the third surface. The projections of the first surface structure include a first projection, and the first projection has a base width greater than a top width.
Abstract translation: 发光装置包括：具有第一表面的透光层; 以及位于第一表面上的光致发光层。 光致发光层具有面向透光层的第二表面和与第二表面相对的第三表面，并从第三表面在空气中发射含有具有波长X的第一光的光。 光致发光层具有位于第三表面上的第一表面结构，第一表面结构具有突起阵列。 透光层具有位于第一表面上的第二表面结构，第二表面结构具有对应于第一表面结构的突起的突起。 第一表面结构和第二表面结构限制从第三表面发射的第一光的方向角。 第一表面结构的突起包括第一突起，并且第一突起具有大于顶部宽度的基部宽度。
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公开(公告)号：US20160327219A1
公开(公告)日：2016-11-10
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
Abstract translation: 发光装置包括发光装置和激发光源。 发光器件包括光致发光层，透光层。 光致发光层和透光层中的至少一个具有至少具有突起或凹陷的亚微米结构。 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：US20150249187A1
公开(公告)日：2015-09-03
申请号：US14621729
申请日：2015-02-13
Inventor： YASUHISA INADA , TAKU HIRASAWA , YOSHITAKA NAKAMURA , AKIRA HASHIYA , MITSURU NITTA , TAKEYUKI YAMAKI
CPC classification number: G02B6/1225 , G02B6/124 , H01L2933/0083
Abstract: A light-emitting device includes a photoluminescent layer that emits light containing first light, a light-transmissive layer located on or near the photoluminescent layer, a low-refractive-index layer and a high-refractive-index layer. A submicron structure is defined on the photoluminescent layer and/or the light-transmissive layer. The low-refractive-index layer is located on or near the photoluminescent layer so that the photoluminescent layer is located between the low-refractive-index layer and light-transmissive layer. The high-refractive-index layer is located on or near the low-refractive-index layer so that the low-refractive-index layer is located between the high-refractive-index layer and the photoluminescent layer. The submicron structure includes at least projections or recesses and satisfies the following relationship: λa/nwav-a
Abstract translation: 发光装置包括发射含有第一光的光的光致发光层，位于光致发光层上或附近的透光层，低折射率层和高折射率层。 亚微米结构限定在光致发光层和/或透光层上。 低折射率层位于光致发光层上或附近，使得光致发光层位于低折射率层和透光层之间。 高折射率层位于低折射率层上或附近，使得低折射率层位于高折射率层和光致发光层之间。 亚微米结构至少包括凸起或凹槽，并且满足以下关系：λa/ nwav-a
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