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公开(公告)号：US20210341657A1
公开(公告)日：2021-11-04
申请号：US17378814
申请日：2021-07-19
Inventor： ATSUSHI ISHIKAWA , YASUHISA INADA
Abstract: A photodetection device includes: a filter array including a plurality of filters arranged in a two-dimensional array, the plurality of filters including a first filter and a second filter, the first filter and the second filter each including a first reflective layer, a second reflective layer, and an intermediate layer between the first reflective layer and the second reflective layer and having a resonant structure having a plurality of resonant modes differing in order from each other, at least one selected from the group consisting of a refractive index and a thickness of the intermediate layer of the first filter being different from the at least one selected from the group consisting of a refractive index and a thickness of the intermediate layer of the second filter; and an image sensor disposed at a position where the image senor receives light having passed through the filter array.
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公开(公告)号：US20210165081A1
公开(公告)日：2021-06-03
申请号：US17154402
申请日：2021-01-21
Inventor： HIROYUKI TAKAGI , TAKU HIRASAWA , AKIRA HASHIYA , YASUHISA INADA
Abstract: An optical device includes a first mirror, a second mirror facing the first mirror, an optical waveguide layer, located between the first mirror and the second mirror, that contains a material whose refractive index changes when a voltage is applied, first and second electrodes directly or indirectly holding the optical waveguide layer therebetween, the first electrode including a plurality of electrode sections arranged in a first direction, and a control circuit. The light is emitted via the first mirror from the optical waveguide layer, or the light is taken into the optical waveguide layer via the first mirror.
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公开(公告)号：US20200003873A1
公开(公告)日：2020-01-02
申请号：US16568247
申请日：2019-09-12
Inventor： NOBUAKI NAGAO , YOSHIKAZU YAMAOKA , YASUHISA INADA , AKIRA HASHIYA , TAKU HIRASAWA
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 has a higher light transmittance than the second mirror and 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：US20190233727A1
公开(公告)日：2019-08-01
申请号：US16190495
申请日：2018-11-14
Inventor： MITSURU NITTA , NOBUAKI NAGAO , YASUHISA INADA
Abstract: A phosphor comprises a crystal phase with a chemical composition (Lu1-p-q, Cep, Mq)xβyγzO. M denotes one or more elements selected from the group consisting of Y, La, Sc, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb. β contains Si, which constitutes 90% or more by mole of β. γ contains N, which constitutes 90% or more by mole of γ. The variables x, y, z, p, and q satisfy 5.5≤x≤6.5, 10.5≤y≤11.5, 19.5≤z≤20.5, 0
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公开(公告)号：US20190049562A1
公开(公告)日：2019-02-14
申请号：US16019444
申请日：2018-06-26
Inventor： TAKU HIRASAWA , HIDEKAZU ARASE , YASUHISA INADA
Abstract: An optical scanning device comprises: a first mirror that has a first reflecting surface; a second mirror that has a second reflecting surface, and that faces the first mirror; an optical waveguide region that is disposed between the first mirror and the second mirror and that propagates light in a direction parallel to at least either the first reflecting surface or the second reflecting surface; and a first adjusting element that changes at least either an average refractive index of the optical waveguide region or a thickness of the optical waveguide region. The optical waveguide region contains a liquid. Each of the first and second mirrors includes a portion in contact with the optical waveguide region.
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Patent Agency Ranking
公开(公告)号：US20190033574A1
公开(公告)日：2019-01-31
申请号：US16015225
申请日：2018-06-22
Inventor： YASUHISA INADA , AKIRA HASHIYA , TAKU HIRASAWA
Abstract: An optical scanning device includes: a first mirror; a second mirror; two non-waveguide regions; an optical waveguide region; and a first adjusting element. The optical waveguide region propagates light. The optical waveguide region and the two non-waveguide regions include respective first regions in which a common material exists. The optical waveguide region or each of the two non-waveguide regions further includes a second region in which a first material having a refractive index different from a refractive index of the common material exists. The first mirror allows part of the light propagating through the optical waveguide region to be emitted through the first mirror. The first adjusting element changes at least either the average refractive index of the optical waveguide region or a thickness of the optical waveguide region to change a direction of the light emitted through the first mirror.
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公开(公告)号：US20160327717A1
公开(公告)日：2016-11-10
申请号：US15215599
申请日：2016-07-21
Inventor： AKIRA HASHIYA , TAKU HIRASAWA , YASUHISA INADA , YOSHITAKA NAKAMURA , MITSURU NITTA , TAKEYUKI YAMAKI , MASAHIRO NAKAMURA
IPC: F21V8/00
CPC classification number: G02B6/0003 , G02B5/1809 , G02B6/0025 , G02B6/0036 , G02B6/0038 , G02B6/0055 , G02B6/0056 , H01L33/508
Abstract: A light-emitting device includes a photoluminescent layer emitting light in response to excitation light, a light-transmissive layer located on the photoluminescent layer, and a light guide guiding the excitation light to 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. The 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: 发光装置包括响应于激发光发光的光致发光层，位于光致发光层上的透光层和将激发光引导到光致发光层的光导。 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。 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：US20250036001A1
公开(公告)日：2025-01-30
申请号：US18914286
申请日：2024-10-14
Inventor： TAKAIKI NOMURA , KAZUKI NAKAMURA , YASUHISA INADA
IPC: G02F1/19 , G02F1/1335
Abstract: An optical device includes a first structure, a second structure, one or more optical waveguide regions, and a seal member. The first structure has a first surface. The second structure has a second surface facing the first surface. The one or more optical waveguide regions are located between the first surface of the first structure and the second surface of the second structure and contain a liquid crystal material. The seal member fixes a spacing between the first structure and the second structure, surrounds the one or more optical waveguide regions, and includes an opening through which the liquid crystal material is injected. A width of the opening in a first direction is greater than a width of the one or more optical waveguide regions in the first direction.
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公开(公告)号：US20240077359A1
公开(公告)日：2024-03-07
申请号：US18505552
申请日：2023-11-09
Inventor： YASUHISA INADA , ATSUSHI ISHIKAWA
CPC classification number: G01J3/2823 , G01J3/12 , G02B5/201 , G02B5/288 , H04N23/80 , G01J2003/1213 , G01J2003/2826
Abstract: An optical filter includes a filter array including filters two-dimensionally arrayed and a band-pass filter. The filters includes first and second filters. A transmission spectrum of each of the first and second filters has local maximum values of transmittance at three or more wavelengths included in a first wavelength region. The band-pass filter passes light in a second wavelength region including two or more wavelengths of the three or more wavelengths and not including one or more wavelengths of the three or more wavelengths. The filter array and the band-pass filter are disposed so that (a) the band-pass filter is located on an optical path of light that passes through the first and second filters or (b) the first and second filters are located on an optical path of light that passes through the band-pass filter.
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公开(公告)号：US20240061117A1
公开(公告)日：2024-02-22
申请号：US18499292
申请日：2023-11-01
Inventor： YASUHISA INADA , KAZUYA HISADA , KAZUKI NAKAMURA , YUMIKO KATO , AKIRA HASHIYA
Abstract: A measurement device includes: a light source which emits laser light to irradiate a moving body and which can vary the frequency of the laser light; an interference optical system that separates the laser light into reference light and output light, and generates interference light by interfering the reference light with at least one reflected light beam generated when at least one light beam obtained from the output light is reflected by the moving body; a light detector that detects the interference light; and a processing circuit that processes a signal outputted from the light detector. The processing circuit generates and outputs a plurality of attribute data pertaining to the moving body on the basis of measurement data on the moving body obtained by processing the signal.
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