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公开(公告)号：US20220317259A1
公开(公告)日：2022-10-06
申请号：US17806507
申请日：2022-06-13
Inventor： Kenji Narumi , Akira Hashiya , Tokuzou Kiyohara
IPC: G01S7/481 , F21V7/00 , G01S17/931
Abstract: A light projection apparatus includes a first mirror and a second mirror facing each other and extending in a first direction and an optical waveguide layer being located between the first mirror and the second mirror, having a structure in which a refractive index and/or a thickness can be changed, and guiding light in the first direction. The first mirror has light transmissivity higher than that of the second mirror, at least part of the light propagating in the optical waveguide layer is emitted outside therefrom, and an emission angle of light to be emitted from the first mirror can be changed in a range from an angle θ1 to an angle θ2 (>θ1) by the refractive index and/or the thickness of the optical waveguide layer being changed. First light emitted at the angle θ1 is projected vertically downward relative to second light emitted at the angle θ2.
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公开(公告)号：US11067451B2
公开(公告)日：2021-07-20
申请号：US15828573
申请日：2017-12-01
Inventor： Seiji Nishiwaki , Kenji Narumi , Yasuhiko Adachi
IPC: H01L27/00 , G01J5/08 , G01B9/02 , H01L27/146 , G01J1/04 , A61B5/1455 , G01N21/27 , G01N21/17 , G01N21/45 , G01J9/00 , G01N21/47
Abstract: A photo-detection system includes: a photo-detection apparatus including a light-shielding film, an optically-coupled layer, and a photodetector including first and second photo-detection cells; and an arithmetic circuit that generates, based on first signals and second signals, third signals each representing coherence of light having entered a position of each of the first and second photo-detection cells and generates at least one selected from the group consisting of an average value of the third signals, a standard deviation of the third signals, a ratio between the standard deviation and the average value, and a ratio between an average value of a first portion of the third signals based on light having entered the positions of the first photo-detection cells and an average value of a second portion of the third signals based on light having entered the positions of the second photo-detection cells.
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公开(公告)号：US20200243597A1
公开(公告)日：2020-07-30
申请号：US16847704
申请日：2020-04-14
Inventor： Kosaku Saeki , Seiji Nishiwaki , Kenji Narumi
IPC: H01L27/146 , G01J3/10 , G01J3/28
Abstract: A structural body includes a first dielectric layer and a second dielectric layer which is in contact with the first dielectric layer and which has a refractive index different from that of the first dielectric layer. The second dielectric layer includes at least two dielectric films different in hydrogen concentration from each other. The interface between the first dielectric layer and the second dielectric layer has periodic first irregularities.
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公开(公告)号：US10051159B2
公开(公告)日：2018-08-14
申请号：US14805011
申请日：2015-07-21
Inventor： Keiichi Matsuzaki , Michihiro Yamagata , Norihiro Imamura , Kenji Narumi
Abstract: An imaging apparatus comprises a lens optical system including a lens and having first through nth optical regions (n is an integer equal to or greater than 2), an image sensor including pixel groups each including first through nth pixels, an optical element array disposed between the lens optical system and the image sensor and including optical components each guiding light that has passed through the first through nth optical regions to the respective first through nth pixels in each of the pixel groups, and an optical absorption member on which light reflected by the imaging surface of the image sensor is incident. The optical absorptance of the optical absorption member is substantially uniform across the entire wavelength bands of light that passes through the first through nth optical regions and is substantially uniform across the entire optical absorption member.
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