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公开(公告)号：US20240118555A1
公开(公告)日：2024-04-11
申请号：US18273350
申请日：2022-01-14
Applicant: Fujikura Ltd.
Inventor： Hiroyuki Kusaka , Masahiro Kashiwagi
CPC classification number: G02B27/4244 , G02B5/1842 , G02B27/4294 , G06E3/001
Abstract: An optical computing device includes a light diffraction element group including light diffraction elements each having an optical computing function, and a light receiver that detects respective intensities of wavelength components contained in signal light outputted from the light diffraction element group. The light diffraction elements are disposed side by side on a light path of the signal light inputted into the light diffraction element group such that the signal light passes sequentially through the light diffraction elements.
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公开(公告)号：US20240100769A1
公开(公告)日：2024-03-28
申请号：US18273606
申请日：2021-11-09
Applicant: FUJIKURA LTD.
Inventor： Hiroyuki Kusaka , Masahiro Kashiwagi
IPC: B29C64/129 , B29C64/268
CPC classification number: B29C64/129 , B29C64/268 , B33Y10/00
Abstract: A method for manufacturing a stereolithographically fabricated object includes separately irradiating, with light, respective n regions R1 to Rn of a photo-curable resin, where n is an integer of not less than 2. An overlap area of the region Ri overlaps a part of the region Rj, where i is an integer that satisfies 1≤i≤n and j is an integer that satisfies 1≤j≤n and j≠i. The photo-curable resin is cured in a part or an entirety of the overlap area by irradiating the region Ri with the light.
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公开(公告)号：US20240075686A1
公开(公告)日：2024-03-07
申请号：US18262374
申请日：2021-12-01
Applicant: Fujikura Ltd.
Inventor： Hiroyuki Kusaka , Masahiro Kashiwagi
IPC: B29C64/264 , B29C64/124 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G02B26/08
CPC classification number: B29C64/264 , B29C64/124 , B29C64/393 , B33Y10/00 , B33Y30/00 , B33Y50/02 , G02B26/0833
Abstract: An optical fabrication device includes a light source that emits light and cures a photo-curable resin, a digital micromirror device that reflects the light and projects a predetermined pattern, a microlens array disposed downstream of the digital micromirror device and that transmits the light that has been reflected by the digital micromirror device, an objective disposed downstream of the microlens array and that causes the light that has been transmitted through the microlens array to form an image, a container that holds the photo-curable resin, a sample platform disposed inside the container, and a controller that controls the digital micromirror device and causes the light to form an image having the predetermined pattern at each of levels that are different in distance from a main face of the sample platform.
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Patent Agency Ranking
公开(公告)号：US20220285903A1
公开(公告)日：2022-09-08
申请号：US17632432
申请日：2020-09-02
Applicant: FUJIKURA LTD.
Inventor： Hiroyuki Kusaka , Masahiro Kashiwagi
IPC: H01S3/067 , H01S3/094 , H01S3/0941
Abstract: An optical amplification apparatus includes a first amplification optical fiber, a second amplification optical fiber, a first pumping light source, and a second pumping light source. The first amplification optical fiber includes a first core and a first cladding layer. The first core is doped with an active element using a first active element doping concentration distribution. The first cladding layer is disposed out of the first core and has a refractive index lower than the refractive index of the first core. The second amplification optical fiber is connected to the first amplification optical fiber in a longitudinal direction of the first amplification optical fiber. The second amplification optical fiber includes a second core and a second cladding layer. The second core is doped with active element using a second active element doping concentration distribution that is different from the first active element doping concentration distribution.
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公开(公告)号：US20220229461A1
公开(公告)日：2022-07-21
申请号：US17633835
申请日：2021-06-04
Applicant: FUJIKURA LTD.
Inventor： Hiroyuki Kusaka , Masahiro Kashiwagi
Abstract: An optical computing system includes: a light diffraction element group including n pieces of light diffraction elements, where n is a natural number of 2 or more. Each of the n pieces includes cells, each of which has a thickness or a refractive index that is independently set. Each of the cells is classified into a C1 cell or a C2 cell. The thickness or the refractive index of each of the C1 cells is set such that optical computing that is carried out by the light diffraction element group becomes an identity operation when the C2 cells are masked.
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公开(公告)号：US20210016351A1
公开(公告)日：2021-01-21
申请号：US16979590
申请日：2019-03-27
Applicant: FUJIKURA LTD.
Inventor： Hiroyuki Kusaka , Masahiro Kashiwagi
Abstract: An aspect of the present invention makes it easier to increase a temperature of metal powder to a temperature at which a powder bed (PB) is sintered or melted. An irradiation device (13) includes: a galvano scanner (13a) which irradiates at least part of a powder bed (PB) with laser light; and a wavelength converting element (WCE) provided in an optical path of the laser light. The wavelength converting element (WCE) converts laser light inputted into the wavelength converting element to laser light containing harmonic wave light (HL) which has a shorter wavelength than the laser light inputted into the wavelength converting element.
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公开(公告)号：US09857533B2
公开(公告)日：2018-01-02
申请号：US15450942
申请日：2017-03-06
Applicant: FUJIKURA LTD.
Inventor： Hiroyuki Kusaka , Ryokichi Matsumoto , Kazuhiro Goi , Kensuke Ogawa
CPC classification number: G02B6/126 , G02B6/12 , G02B6/12004 , G02B6/122 , G02B6/1228 , G02B6/125 , G02B6/13 , G02B6/278 , G02B2006/12123 , G02F1/225 , G02F2001/212
Abstract: An optical waveguide element includes a core and a cladding that is made of SiO2. When ng_i_TE is a group refractive index of a TE0 polarized wave in the i-th waveguide counted from a light incidence plane of the core and ng_i_TM is a group refractive index of a TM0 polarized wave in the i-th waveguide, the length L—i[m] of the i-th waveguide satisfies a predetermined relation.
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公开(公告)号：US09008476B2
公开(公告)日：2015-04-14
申请号：US14314827
申请日：2014-06-25
Applicant: Fujikura Ltd.
Inventor： Akira Oka , Kazuhiro Goi , Kensuke Ogawa , Hiroyuki Kusaka
CPC classification number: G02B6/2804 , G02B6/2726 , G02B6/2733 , G02B6/2821
Abstract: A polarization conversion device includes: a directional coupler that includes an input side optical waveguide and an output side optical waveguide which are disposed in parallel to each other and each of which has a core. Assuming that a direction in which the input side optical waveguide and the output side optical waveguide face each other is a width direction and a direction perpendicular to the width direction is a height direction in a cross section perpendicular to a longitudinal direction of each of the input side optical waveguide and the output side optical waveguide, and the directional coupler is configured to couple first light guided through the input side optical waveguide to second light guided through the output side optical waveguide, the polarization direction of the second light is perpendicular to that of the first light.
Abstract translation: 偏振转换装置包括：定向耦合器，其包括彼此平行设置并且具有芯的输入侧光波导和输出侧光波导。 假设输入侧光波导和输出侧光波导面对的方向是宽度方向和垂直于宽度方向的方向是垂直于每个输入端的纵向方向的横截面中的高度方向 并且定向耦合器被配置为将通过输入侧光波导引导的第一光耦合到通过输出侧光波导引导的第二光，第二光的偏振方向垂直于 第一盏灯。
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