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公开(公告)号：US20190078743A1
公开(公告)日：2019-03-14
申请号：US15766392
申请日：2016-10-11
Inventor： ATSUSHI FUKUI , KOICHIRO ONO , TATSUO DOHI
IPC: F21S41/143 , F21S41/63 , G02B3/02 , G02B13/18
Abstract: There is provided a lighting device capable of forming a line beam having a sufficiently long length in an irradiation direction. A distance between a light source end close to irradiation surface and irradiation surface is greater than a distance between lens center and irradiation surface by using light source in which a plurality of light emitters is arranged in a straight line and lens of which an emission surface having a constant curvature is corrected by an odd function. Accordingly, a shape of light source is formed on irradiation surface, and thus, it is possible to form line beam having the sufficiently long length in the irradiation direction.
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公开(公告)号：US20180313998A1
公开(公告)日：2018-11-01
申请号：US16029208
申请日：2018-07-06
Inventor： ATSUSHI FUKUI , TOMOHISA SAKAGUCHI , KENICHIRO MASE
IPC: F21V8/00 , F21S43/247 , F21S43/245 , F21S43/237 , F21S43/00
CPC classification number: G02B6/0036 , F21S43/00 , F21S43/237 , F21S43/245 , F21S43/247 , G02B6/00 , G02B6/0031 , G02B6/0038
Abstract: There is provided a light guide body, containing: a first end region; a second end region located on an opposite side of the first end region; first dots; and second dots having a dot in the first end region being smaller than a dot in the second end region, wherein a size difference between the first dots and the second dots in the first end region is smaller than a size difference between the first dots and the second dots in the second end region.
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公开(公告)号：US20250036077A1
公开(公告)日：2025-01-30
申请号：US18912677
申请日：2024-10-11
Inventor： YOSUKE ARAKI , ATSUSHI FUKUI , WAHEI AGEMIZU , KAZUMASA TAKATA , KENICHIRO MASE
Abstract: A hologram manufacturing device includes a master hologram on which a diffraction grating is formed, a duplicate hologram disposed close to the master hologram, a first light source that emits, to the master hologram and the duplicate hologram, a first laser light that satisfies a Bragg diffraction condition in the diffraction grating, a second light source that emits, to the master hologram and the duplicate hologram, a second laser light that does not satisfy the Bragg diffraction condition in the diffraction grating, and a sensor that measures the second laser light. The hologram manufacturing device ends exposure of the duplicate hologram with the first laser light based on a measurement result of the sensor.
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公开(公告)号：US20200379331A1
公开(公告)日：2020-12-03
申请号：US16826509
申请日：2020-03-23
Inventor： ATSUSHI FUKUI , KAZUMASA TAKATA
IPC: G03B21/20 , G01S7/4865 , G02B5/04
Abstract: Light emitted from laser light source is divided by prism into two light flux and light flux corresponding to light emitted from slope and slope. Light flux and light flux are diffused by diffusion plate and diffusion plate to become light flux and light flux. By overlapping light flux and light flux, a radiation distribution with a wide angle and high light intensity can be obtained.
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公开(公告)号：US20170146721A1
公开(公告)日：2017-05-25
申请号：US15328009
申请日：2015-06-02
Inventor： ATSUSHI FUKUI , KEIZOU MATSUMURA , TAKAYUKI YAMAGUCHI
CPC classification number: G02B6/0036 , G02B6/00 , G02B6/003 , G02B6/0031 , G02B6/006 , G02B6/0068 , G02B6/0083 , G02B6/0088 , G09F13/14 , G09F13/16 , G09F13/18
Abstract: A light guide plate display device includes a light guide plate, a plurality of light source devices, and a plurality of prisms. The light guide plate includes a display face and a plurality of end faces, and is formed of a light transmitting material. The light source devices are provided along respective end faces of the light guide plate, and radiate light from the end face toward an inside of the light guide plate. The prisms are formed inside the light guide plate. The prisms respectively have a plurality of side faces which face the respective light source devices. The respective side faces are inclined at least in two stages of a transmitting inclined face which transmits light radiated from the light source device, and a reflecting inclined face which reflects the light radiated from the light source device, and outputs the light to the display face, in a thickness direction of the light guide plate.
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Patent Agency Ranking
公开(公告)号：US20160334074A1
公开(公告)日：2016-11-17
申请号：US15109451
申请日：2015-02-24
Inventor： ATSUSHI FUKUI , SHOHROH MOCHIDA , TAKAYUKI YAMAGUCHI , TOMOYUKI OGATA
IPC: F21S8/10
CPC classification number: F21S41/265 , F21S41/275 , F21S41/322 , F21S43/14 , F21S43/26 , F21S43/315 , F21S43/40 , G02B19/0061
Abstract: An illumination apparatus, including: multiple LEDs; and a lens unit that is placed correspondingly to the respective LEDs, wherein the lens unit includes a transmission lens, a first total-reflection lens, and a second total-reflection lens, wherein an incidence surface and an emission surface of the transmission lens, as well as incidence surfaces, emission surfaces and total-reflection surfaces of the first total-reflection lens and the second total-reflection lens are two-axis anamorphic aspherical surfaces, a microlens array is formed on at least one of the incidence surface and the emission surface of the transmission lens, a microlens array is formed on at least one of the emission surfaces, the total-reflection surfaces and the incidence surfaces of the first total-reflection lens and the second total-reflection lens, and the microlens arrays each have a structure in which microlenses are periodically arrayed, and are arrayed along the vertical and horizontal directions of the illumination apparatus.
Abstract translation: 一种照明装置，包括：多个LED; 以及对应于各个LED放置的透镜单元，其中透镜单元包括透射透镜，第一全反射透镜和第二全反射透镜，其中透射透镜的入射表面和发射表面， 以及第一全反射透镜和第二全反射透镜的入射面，发射面和全反射面是双轴变形非球面，微透镜阵列形成在至少一个入射面和 透射透镜的发射表面，在第一全反射透镜和第二全反射透镜的全反射表面和入射表面以及微透镜阵列中的至少一个上形成微透镜阵列 具有周期性排列微透镜的结构，并且沿着照明装置的垂直和水平方向排列。
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公开(公告)号：US20210103208A1
公开(公告)日：2021-04-08
申请号：US17016556
申请日：2020-09-10
Inventor： KAZUMASA TAKATA , TAKASHI MATSUDA , ATSUSHI FUKUI
Abstract: An optical multiplexer includes: incident surface on which a plurality of incident light beams having different wavelengths are incident; first reflection portion that reflects the plurality of incident light beams; and emission surface that emits a plurality of reflected light beams reflected by the first reflection surface. The incident surface is provided with a plurality of adjacent condenser lenses corresponding to respective incident light beams. The first reflection surface has a plurality of adjacent reflection surfaces that reflect the light beams condensed by the condenser lenses. The plurality of reflection surfaces are respectively disposed so that angle β formed by the respective reflected light beams reflected by the adjacent reflection surfaces is smaller than angle α formed by the respective incident light beams condensed by the adjacent condenser lenses. The emission surface is provided with diffraction grating in which respective reflected light beams reflected by the plurality of reflection surfaces are incident at a same position and diffracted in a same direction.
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公开(公告)号：US20160209575A1
公开(公告)日：2016-07-21
申请号：US14885591
申请日：2015-10-16
Inventor： ATSUSHI FUKUI , MASARU FUJITA , TOMOHISA SAKAGUCHI
CPC classification number: G02B6/0036 , A47L5/00 , A47L9/244 , A47L9/281 , A47L9/2857 , A47L9/30 , F21V33/0044 , G02B6/0031
Abstract: An indication lighting device provided is capable of reducing the number of electric wiring from a fixed, part to a moving part when an indication part is provided in the moving part's side. The indication lighting device makes indication by emitting light from a light source arranged in a fixed part to an optical waveguide arranged in a moving part, reflecting the light incident on the optical waveguide by reflection surfaces of prisms of the optical waveguide to an indication part provided in a tip side of the optical waveguide to be propagated, and emitting the light propagated inside the optical waveguide through the indication part.
Abstract translation: 所提供的指示照明装置能够在移动部分侧设置指示部时，减少从固定部分到移动部件的电气布线的数量。 指示照明装置通过将布置在固定部分中的光源发出的光发射到布置在移动部分中的光波导来进行指示，将入射在光波导上的光通过光波导的棱镜的反射表面反射到提供的指示部分 在要传播的光波导的尖端侧，并且通过指示部发射在光波导内传播的光。
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公开(公告)号：US20250008075A1
公开(公告)日：2025-01-02
申请号：US18884087
申请日：2024-09-12
Inventor： ATSUSHI FUKUI , YOSUKE ARAKI , WAHEI AGEMIZU , TAKASHI MATSUDA , KAZUMASA TAKATA
IPC: H04N13/322 , H04N13/398
Abstract: A display device according to a present exemplary embodiment includes: a varifocal lens having a variable focal length; a display disposed facing the varifocal lens; and a controller configured to control the focal length of the varifocal lens, and to cause the display to display an image. The controller is configured to shorten the focal length of the varifocal lens when a distant image is to be displayed on display, and to extend the focal length f of varifocal lens when a nearby image is to be displayed on the display.
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公开(公告)号：US20230400613A1
公开(公告)日：2023-12-14
申请号：US18458185
申请日：2023-08-30
Inventor： ATSUSHI FUKUI , KAZUMASA TAKATA , YOSUKE ARAKI
CPC classification number: G02B5/1866 , H04J14/0307
Abstract: An optical multiplexer includes a plurality of light sources that emit a plurality of laser beams having different wavelengths, a collimator that collimates a plurality of laser beams emitted from a plurality of light sources, and a diffraction grating that diffracts a plurality of laser beams collimated by the collimator and emits a plurality of laser beams along a same optical path, the diffraction grating being of a transmission-type. A plurality of light sources are linearly arranged on an incident side focal plane of the collimator, a grating surface of the diffraction grating is disposed on an emission side focal plane of the collimator, and distance D between two adjacent light sources is set to satisfy D=f×(λ1−λ2)/p, where λ1, λ2 (λ1>λ2) are respectively wavelengths of laser beams emitted from the two adjacent light sources.
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