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公开(公告)号：US20240236513A1
公开(公告)日：2024-07-11
申请号：US18001265
申请日：2022-01-18
申请人： Fujikura Ltd.
CPC分类号： H04N23/95 , H04N23/815 , H04N25/41
摘要： An imaging device includes: an optical computing section that receives a first optical signal and generates a second optical signal including a feature amount extracted from the first optical signal; an image sensor that converts the second optical signal into a first electric signal including a piece of image information; and a computer that receives the first electric signal and generates second electric signals using machine learning models, each of the second electric signals corresponding to a respective one of the machine learning models, wherein: each of the second electric signals, generated from the first electric signal including the same piece of image information, includes different image information.
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公开(公告)号：US20240103207A1
公开(公告)日：2024-03-28
申请号：US18009513
申请日：2021-06-30
申请人： FUJIKURA LTD.
摘要： An optical computing device includes: a light diffraction element group including light diffraction elements having an optical computing function, wherein the light diffraction element group passes light through the light diffraction elements in turn, the light passing through the light diffraction elements was either: reflected or scattered from a non-illuminant object located outside the optical computing device, or emitted from an illuminant object located outside the optical computing device, and neither the non-illuminant object nor the illuminant object is a display.
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公开(公告)号：US20230194887A1
公开(公告)日：2023-06-22
申请号：US17925518
申请日：2022-01-27
申请人： Fujikura Ltd.
CPC分类号： G02B27/4233 , G02B27/4272 , G06E3/00
摘要： An optical computing device includes: one or more light-diffraction elements each of which includes microcells, wherein each of the microcells has an individually set thickness or refractive index; and an optical signal input section that simultaneously inputs an optical signal and a delayed optical signal obtained by delaying the optical signal to the one or more light-diffraction elements.
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公开(公告)号：US20210001428A1
公开(公告)日：2021-01-07
申请号：US17040760
申请日：2019-03-28
申请人： FUJIKURA LTD.
IPC分类号： B23K26/354 , B23K26/342 , B33Y10/00 , B33Y30/00 , B33Y50/02
摘要： The present invention causes residual stress, which may be generated in a metal shaped object (MO), to be small. A metal shaping device includes an irradiation device (13, 13A). The irradiation device (13, 13A), which is configured to irradiate a powder bed (PB) containing a metal powder with laser light (L), is able to be switched between (i) a focused state in which a beam spot diameter (D1) of laser light (L) on a surface of the powder bed (PB) has a first value and (ii) a defocused state in which the beam spot diameter (D2) of the laser light (L) on the surface of the powder bed (PB) has a second value which is larger than the first value.
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公开(公告)号：US09448425B2
公开(公告)日：2016-09-20
申请号：US14748331
申请日：2015-06-24
申请人： FUJIKURA LTD.
发明人： Kensuke Ogawa , Kazuhiro Goi , Hiroyuki Kusaka
CPC分类号： G02F1/025 , G02B6/1228 , G02B2006/12061 , G02B2006/12097 , G02B2006/12159 , G02F1/015 , G02F1/2257 , G02F2001/0152 , G02F2001/212
摘要： An optical waveguide element includes: a rib waveguide and a pair of slab portions including a first slab portion and a second slab portion connected to both sides of the rib portion so as to sandwich the rib portion. The rib portion has a cross-sectional dimension which allows the propagation of a fundamental mode and a higher order mode in a predetermined single polarization state, and has a first P-type semiconductor and a first N-type semiconductor forming a PN junction, the first slab portion has a second P-type semiconductor and a P-type conductor connected to each other, the second P-type semiconductor is connected to the first P-type semiconductor of the rib portion, the second slab portion has a second N-type semiconductor and an N-type conductor connected to each other, and the second N-type semiconductor is connected to the first N-type semiconductor of the rib portion.
摘要翻译： 光波导元件包括：肋波导和一对板状部分，其包括连接到肋部分两侧的第一板坯部分和第二板坯部分，以便夹住肋部分。 肋部具有允许在预定的单极化状态下传播基模和高阶模的横截面尺寸，并且具有形成PN结的第一P型半导体和第一N型半导体， 第一板状部具有彼此连接的第二P型半导体和P型导体，第二P型半导体与肋部的第一P型半导体连接，第二板状部具有第二N型半导体， 并且第二N型半导体与肋部的第一N型半导体连接。
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公开(公告)号：US09335472B2
公开(公告)日：2016-05-10
申请号：US14509126
申请日：2014-10-08
申请人： FUJIKURA LTD.
发明人： Akira Oka , Kensuke Ogawa , Kazuhiro Goi , Hiroyuki Kusaka
CPC分类号： G02B6/1228 , G02B6/125 , G02B6/126 , G02B6/14
摘要： A planar optical waveguide device, includes: two input portions that are waveguides that have the same width, are parallel to each other, and have rectangular cross-sections; a wide portion that is a linear waveguide and is connected after the two input portions; a tapered portion that is connected after the wide portion and that is a multi-mode waveguide which has a tapered shape having a width decreasing gradually and through which at least TE1 propagates; and an output portion that is connected after the tapered portion and that is a multi-mode waveguide which has a rectangular cross-section and through which at least TE1 propagates. The planar optical waveguide device forms a high-order mode conversion combining element that outputs the TE0, which is input to the two input portions, as the TE1 from the output portion.
摘要翻译： 平面光波导装置包括：具有相同宽度的波导的两个输入部分彼此平行并具有矩形横截面; 宽的部分是线性波导并且在两个输入部分之后连接; 连接在宽部分之后的锥形部分，并且是具有逐渐减小并且至少TE1传播的宽度的锥形形状的多模式波导; 以及输出部分，其连接在锥形部分之后，并且是具有矩形横截面且至少TE1传播的多模波导的输出部分。 平面光波导器件形成从输出部分输出到两个输入部分的TE1作为TE1的高阶模式转换组合元件。
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公开(公告)号：US20240078420A1
公开(公告)日：2024-03-07
申请号：US18262382
申请日：2022-01-14
申请人： Fujikura Ltd.
CPC分类号： G06N3/067 , G02B5/1819
摘要： An optical computing device includes a light diffraction element group including light diffraction elements each having an optical computing function, and a light emitter that generates signal light inputted into the light diffraction element group and indicative of images formed by different optical systems.
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公开(公告)号：US20230176267A1
公开(公告)日：2023-06-08
申请号：US17923735
申请日：2021-08-18
申请人： FUJIKURA LTD.
CPC分类号： G02B5/18 , G02F1/01 , G02B2207/117
摘要： An optical computing system includes: an intensity modulation device group including at least two intensity modulation devices, each of which includes modulation cells, wherein each of the modulation cells of each of the intensity modulation devices carries out intensity modulation with respect to carrier light in accordance with one of signals to generate a signal light beam, and each of the signals corresponds to each of the intensity modulation devices; and a light diffraction element including diffraction cells having respective thicknesses or refractive indices set independently of each other, wherein each of the diffraction cells receives the signal light beam from each of the modulation cells of each of the intensity modulation devices corresponding to each of the diffraction cells, and by causing signal light beams to have respective different optical path lengths to the light diffraction element, the signal light beams have respective different phases.
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公开(公告)号：US11316315B2
公开(公告)日：2022-04-26
申请号：US16962985
申请日：2019-01-23
申请人： FUJIKURA LTD.
摘要： A fiber laser apparatus includes a pump light source that emits pump light; a pump delivery fiber that guides the pump light; an amplifying optical fiber that is optically coupled to the pump delivery fiber and guides laser light; and a filter element that causes more loss of light of a wavelength range that includes a peak wavelength of at least one of Stokes light and anti-Stokes light than the laser light. The Stokes light and anti-Stokes light result from four-wave mixing involving a plurality of guide modes in a multi-mode fiber that guides the laser light. The filter element is disposed between: the pump delivery fiber and the amplifying optical fiber, the amplifying optical fiber and the multi-mode fiber, or at the multi-mode fiber.
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公开(公告)号：US09817294B2
公开(公告)日：2017-11-14
申请号：US14748895
申请日：2015-06-24
申请人： FUJIKURA LTD.
发明人： Kazuhiro Goi , Hiroki Ishihara , Kensuke Ogawa , Kenji Oda , Hiroyuki Kusaka , Ryokichi Matsumoto , Hitoshi Uemura
CPC分类号： G02F1/2257 , G02B6/122 , G02B6/1228 , G02B6/125 , G02B6/29353 , G02B6/29355 , G02B2006/12097 , G02B2006/12142 , G02B2006/12147 , G02B2006/12159 , G02F1/025 , G02F1/218 , G02F1/2255 , G02F2001/212 , G02F2201/58
摘要： An optical modulation device configured of a planar optical waveguide, includes: a light incidence unit which allows light to be incident on the planar optical waveguide; a Mach-Zehnder interferometer which includes a first optical splitter section branching the light incident on the light incidence unit, two arm portions guiding the light branched by the first optical splitter section, a phase modulation unit linearly disposed on each of the two arm portions, and a first optical coupler section combining the light guided from the two arm portions; a light launching unit which launches the light combined by the first optical coupler section from the planar optical waveguide; and a traveling-wave electrode which includes an input unit and an output unit, and applies a voltage to the phase modulation unit.
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