Patents Assigned to Fujikura Ltd.
  • COLD PLATE
    Publication number: 20240121912
    Abstract: A cold plate includes: a metal base plate having a first surface, a second surface on a side opposite the first surface, and fins disposed in parallel on the first surface; and a topped cylindrical resin cover covering the fins. The first surface has a recessed portion recessed toward the second surface. The topped cylindrical resin cover is heat-fused to the metal base plate on an inner surface of the recessed portion.
    Type: Application
    Filed: January 21, 2022
    Publication date: April 11, 2024
    Applicant: Fujikura Ltd.
    Inventors: Masahiro Matsuda, Koichi Mashiko, Yoji Kawahara
  • OPTICAL COMPUTATION DEVICE AND OPTICAL COMPUTATION METHOD
    Publication number: 20240118555
    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.
    Type: Application
    Filed: January 14, 2022
    Publication date: April 11, 2024
    Applicant: Fujikura Ltd.
    Inventors: Hiroyuki Kusaka, Masahiro Kashiwagi
  • Method of manufacturing aluminum alloy wire, method of manufacturing electric wire and method of manufacturing wire harness using the same
    Patent number: 11951533
    Abstract: A method of manufacturing an aluminum alloy wire includes: forming a rough drawing wire composed of an aluminum alloy containing aluminum, an additive element, and unavoidable impurities, the additive element including Si and Mg; obtaining an aluminum alloy wire by performing a treatment on the rough drawing wire, wherein the treatment includes at least one or more wire drawing treatments; forming a first solution treatment material by forming a solid solution of the aluminum and the additive element and then performing a quenching treatment on the solid solution, wherein the first solution treatment is performed directly before the last of the one or more wire drawing treatments is performed; a second solution treatment that forms a second solution treatment material by forming a solid solution of the aluminum and the additive element and then performing a quenching treatment on the solid solution.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: April 9, 2024
    Assignee: Fujikura Ltd.
    Inventors: Tatsunori Shinoda, Naoki Kaneko, Tsuyoshi Yoshioka
  • Optical combiner and laser apparatus
    Patent number: 11955777
    Abstract: An optical combiner includes: a plurality of first input optical fibers that each include a core; a bridge fiber that includes a bridge input surface connected to the cores of the plurality of first input optical fibers, a diameter reduction portion having a diameter that decreases away from the bridge input surface along an optical axis of the optical combiner, and a bridge output surface located opposite to the bridge input surface along the optical axis; an intermediate optical fiber that includes a core connected to the bridge output surface of the bridge fiber; a second input optical fiber that includes a core; and an output optical fiber that includes a first optical waveguide connected to the core of the intermediate optical fiber, and a second optical waveguide connected to the core of the second input optical fiber.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: April 9, 2024
    Assignee: Fujikura Ltd.
    Inventors: Tomoyuki Fujita, Ryokichi Matsumoto, Yutaka Yamaguchi, Takuya Kobayashi, Kiwamu Suzuki
  • Connector system, optical connection method, and optical connection member
    Patent number: 11947170
    Abstract: A connector system includes: a first ferrule configured to hold end parts of multi-core fibers; a second ferrule configured to hold end parts of single-core fibers; and an optical connection member. The optical connection member is arranged between the first and the second ferrule, and includes an optical system configured to optically connect respective cores included in the multi-core fibers and the single-core fibers. A guide pin is formed on one of the first and the second ferrule, and a guide hole is formed in another of the first and the second ferrule. A through hole is formed in the optical connection member, and the first ferrule, the optical connection member, and the second ferrule can be aligned by fitting the guide pin in the guide hole through the through hole.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: April 2, 2024
    Assignee: Fujikura Ltd.
    Inventors: Hirotaka Asada, Kansei Shindo, Kunihiko Fujiwara
  • Optical fiber cable, optical combiner unit using optical fiber cable, and laser device
    Patent number: 11947166
    Abstract: An optical fiber cable includes: an optical fiber; a cable jacket that includes inner and outer tubes; first and second open detection lines; and an optical connector disposed at a first end of the optical fiber cable. A first end of the first open detection line and a first end of the second open detection line are disposed inside the optical connector and are not electrically connected to each other inside the optical connector. The optical fiber is disposed in one of a first region and a second region, wherein the first region is inside the inner tube and the second region is between the inner tube and the outer tube, and at least one of the first and second open detection lines is disposed in the other of the first region and the second region.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: April 2, 2024
    Assignee: Fujikura Ltd.
    Inventor: Tadayoshi Sayama
  • METHOD FOR MANUFACTURING STEREOLITHOGRAPHICALLY FABRICATED OBJECT
    Publication number: 20240100769
    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.
    Type: Application
    Filed: November 9, 2021
    Publication date: March 28, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Hiroyuki Kusaka, Masahiro Kashiwagi
  • OPTICAL COMPUTING DEVICE AND OPTICAL COMPUTING METHOD
    Publication number: 20240103207
    Abstract: 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.
    Type: Application
    Filed: June 30, 2021
    Publication date: March 28, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Hiroyuki Kusaka, Masahiro Kashiwagi, Yuichiro Kunai
  • Antenna with radiation element having non-uniform width part
    Patent number: 11942706
    Abstract: An antenna includes a dielectric layer, a conductive ground layer formed on a first main surface of the dielectric layer, and radiation elements formed on a second main surface of the dielectric layer and are conductive. The first radiation element includes a first non-uniform width part that has a width in a direction parallel to a first side in a linear shape opposed to a first vertex, and the width of the first non-uniform width part gradually decreases in a direction from the first side to the first vertex. The second radiation element includes a second non-uniform width part that has a width in a direction parallel to a second side in a linear shape opposed to a second vertex, and the width of the second non-uniform width part gradually decreases in a direction from the second side to the second vertex.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: March 26, 2024
    Assignee: FUJIKURA LTD.
    Inventors: Shailendra Kaushal, Ning Guan, Asahi Kan
  • Optical connector cleaning tool and method of cleaning optical connector
    Patent number: 11938519
    Abstract: An optical connector cleaning tool includes: a tool body; and an extension that moves relatively with respect to the tool body. The extension extends out of the tool body and includes a head that presses a cleaning element formed with a tape-like adhesive element onto an optical connector. A relative movement of the extension with respect to the tool body carries the cleaning element to the head, and after carrying the cleaning element to the head, enables the cleaning element to contact the optical connector.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: March 26, 2024
    Assignee: Fujikura Ltd.
    Inventor: Junichi Nakane
  • Photodetection device and laser device
    Patent number: 11940321
    Abstract: A photodetection device including: first optical fibers; a second optical fiber; an optical combiner having: an end face connected to an end face of each of the first optical fibers; and another end face connected to an end face of the second optical fiber; a first photodetector that detects an intensity of light propagating through at least one of the first optical fibers; a second photodetector that detects Rayleigh scattering of light propagating through the second optical fiber; and a calculator that calculates the intensity of light propagating in a predetermined direction through the first optical fibers or the second optical fiber, from a result of detection by the first photodetector and a result of detection by the second photodetector.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: March 26, 2024
    Assignee: Fujikura Ltd.
    Inventors: Shinichi Sakamoto, Wataru Kiyoyama
  • CLEANING TOOL AND CLEANING METHOD
    Publication number: 20240091824
    Abstract: A cleaning tool includes: a first tape including an adhesive surface; a head around which the first tape is wrapped and that presses the adhesive surface against an object; a feeder that transports the first tape and a second tape in contact with the adhesive surface; and a separator that separates the first tape from the second tape during transportation of the first tape to the head.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 21, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Shunsuke Fujita, Yuya Sakaguchi
  • CAPACITANCE SENSOR AND METHOD FOR PRODUCING CAPACITANCE SENSOR
    Publication number: 20240094424
    Abstract: A capacitance sensor includes a translucent base film, a translucent resist layer disposed on a part of a main surface of the translucent base film and having higher adhesion to a conductive polymer than to the translucent base film, and a translucent electrode including a conductive material containing the conductive polymer and disposed on a surface of the translucent resist layer opposite to a surface of the translucent resist layer on which the translucent base film is disposed. When viewed along a thickness direction of the translucent base film, a region of the main surface of the translucent base film where the translucent resist layer is not disposed surrounds the translucent electrode.
    Type: Application
    Filed: March 3, 2022
    Publication date: March 21, 2024
    Applicant: Fujikura Ltd.
    Inventor: Takashi Kameshima
  • LIGHT DIFFRACTION ELEMENT UNIT AND OPTICAL COMPUTATION DEVICE
    Publication number: 20240085600
    Abstract: A light diffraction element unit includes a base material including a light-transmissive and flexible layer member, a light diffraction structure including microcells and disposed on a portion of a main surface of the base material, and a holding part holding the base material and including a layer member or a plate member having an opening that penetrates through a pair of main surfaces of the layer member or the plate member. The holding part holds an annular portion of the base material such that the light diffraction structure is encompassed in the opening. The annular portion surrounds the portion of the main surface of the base material.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 14, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Hiroyuki Kusaka, Masahiro Kashiwagi
  • COMPONENT-INCORPORATED SUBSTRATE AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240090140
    Abstract: A component-incorporated substrate of multi-layer structure includes: a first printed wiring base having an opening; a second printed wiring base in a first side of the first printed wiring base; a third printed wiring base in a second side of the first printed wiring base; an electronic component housed in the opening of the first printed wiring base; a via penetrating one or more of the first printed wiring base, the second printed wiring base and the third printed wiring base; and an adhesive layer that fills a gap between the electronic component and the opening, a gap between the first printed wiring base and the second printed wiring base, and a gap between the first printed wiring base and the third printed wiring base.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Applicant: FUJIKURA LTD.
    Inventor: Masahiro Okamoto
  • Optical fiber arrangement method, optical fiber fusion splicing method, method for manufacturing optical fiber ribbon with connector, and intermittently connected optical fiber ribbon
    Patent number: 11927803
    Abstract: An optical fiber arrangement method includes: preparing an intermittently connected optical fiber ribbon including optical fibers arranged side by side at a first pitch larger than a fiber diameter; holding a non-connecting region of the optical fiber ribbon with a holder, where connecting portions intermittently connect the optical fibers extending out from the holder to each other; changing a width of the optical fiber ribbon in an interior of the holder; and arranging the optical fibers, extending out from the holder, with intervals of the optical fibers changed from the first pitch to a second pitch smaller than the first pitch by removing the connecting portions in a state where the holder is holding the optical fibers.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: March 12, 2024
    Assignee: Fujikura Ltd.
    Inventors: Soichiro Kaneko, Koji Tomikawa, Ken Osato, Noriaki Yamashita
  • Endoscope
    Patent number: 11925318
    Abstract: An endoscope includes an endoscope operation unit; an insertion observation unit extending forward from the endoscope operation unit in a longitudinal direction of the endoscope; a coupling portion between the endoscope operation unit and the insertion observation unit; and an elastic body that covers at least a coupling portion.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: March 12, 2024
    Assignees: Fujikura Ltd., FiberTech Co., Ltd.
    Inventor: Yusuke Matsuda
  • OPTICAL SHAPING DEVICE AND MANUFACTURING METHOD
    Publication number: 20240075686
    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.
    Type: Application
    Filed: December 1, 2021
    Publication date: March 7, 2024
    Applicant: Fujikura Ltd.
    Inventors: Hiroyuki Kusaka, Masahiro Kashiwagi
  • RARE-EARTH DOPED FIBER AND FIBER LASER APPARATUS
    Publication number: 20240079840
    Abstract: A rare-earth doped fiber includes: a core having a radius R and having a doped region to which a rare-earth element has been doped, the doped region ranging from a center of the core to a radius Rre; and a cladding surrounding a circumference of the core and having a refractive index lower than a refractive index of the core. A normalized frequency V at an operating wavelength is greater than or equal to 2.4 and less than or equal to 4.5. The radius Rre is in a range of 0<Rre<(0.0247 V2?0.3353 V+1.6474)R.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 7, 2024
    Applicant: Fujikura Ltd.
    Inventor: Rintaro Kitahara
  • OPTICAL COMPUTATION DEVICE AND OPTICAL COMPUTATION METHOD
    Publication number: 20240078420
    Abstract: 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.
    Type: Application
    Filed: January 14, 2022
    Publication date: March 7, 2024
    Applicant: Fujikura Ltd.
    Inventors: Hiroyuki Kusaka, Masahiro Kashiwagi