Patents Assigned to Fujikura Ltd.
  • FERRULE PIN CLAMP, GUIDE PIN-ATTACHED PIN CLAMP, AND OPTICAL CONNECTOR
    Publication number: 20230023527
    Abstract: A ferrule pin clamp used for a ferrule into which a guide pin is inserted includes: a main body including a pin holder that holds a groove portion of the guide pin. The pin holder includes a pair of arcs. A diameter of the pair of arcs: is smaller than a maximum shaft diameter of the guide pin, and is larger than a shaft diameter of the groove portion of the guide pin.
    Type: Application
    Filed: November 2, 2020
    Publication date: January 26, 2023
    Applicant: FUJIKURA LTD.
    Inventors: Tomoyuki Shinoda, Masayuki Hirose
  • BOBBIN FOR WINDING OPTICAL FIBER
    Publication number: 20230021882
    Abstract: A bobbin for winding optical fiber includes: a body around which an optical fiber is wound; a flange that extends in a radial direction from the body; and a seal that is bonded to an axially outer side surface of the flange. The flange has a void penetrating the flange. A part of the seal covers at least a part of the void. At least a part of a portion of the seal is non-adhesive. The portion covers the void.
    Type: Application
    Filed: December 16, 2020
    Publication date: January 26, 2023
    Applicant: FUJIKURA LTD.
    Inventor: Tsuyoshi Akamatsu
  • MULTICORE FIBER, OPTICAL FIBER CABLE, AND OPTICAL CONNECTOR
    Publication number: 20230017442
    Abstract: A multicore fiber includes: a cladding; and three or more and five or less cores disposed at rotationally asymmetric positions on a circumference centered at a center of the cladding. No core is disposed at the center of the cladding. Angles formed by adjacent ones of lines connecting the center of the cladding and respective ones of the cores are all larger than 60°.
    Type: Application
    Filed: December 16, 2020
    Publication date: January 19, 2023
    Applicant: Fujikura Ltd.
    Inventors: Katsuhiro Takenaga, Yusuke Sasaki, Masaki Ohzeki
  • Imaging module, endoscope, and catheter
    Patent number: 11558534
    Abstract: An imaging module includes: a support substrate that includes a first surface, a second surface on an opposite side of the first surface, and a first mounting terminal disposed on the first surface; a planar light emitter including a light-emitting face, and a light-emitter terminal disposed on the first surface of the support substrate and connected to the first mounting terminal; and a solid-state image sensing device disposed adjacent to the planar light emitter and that includes a light-incident surface that has a quadrangular shape in plan view and that captures an image of an imaging object that is irradiated with light emitted from the light-emitting face.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: January 17, 2023
    Assignee: FUJIKURA LTD.
    Inventors: Yoshinobu Numasawa, Kenichi Ishibashi, Daisuke Murakami, Takeshi Ishizuka
  • METHOD FOR MANUFACTURING WIRING BOARD, WIRING BOARD, METHOD FOR MANUFACTURING MOLDED OBJECT, MOLDED OBJECT
    Publication number: 20230007781
    Abstract: A method for manufacturing a wiring board includes: disposing a first resist material on a substrate; forming a first resist layer by curing the first resist material; forming a resin layer on a release film; forming a conductor portion on the resin layer; covering the conductor portion by disposing a second resist material on the resin layer; forming a second resist layer by curing the second resist material; bringing the first resist layer into contact with the second resist layer, and thereafter bonding the first resist layer and the second resist layer by thermocompression bonding; and releasing the release film from the resin layer.
    Type: Application
    Filed: November 18, 2020
    Publication date: January 5, 2023
    Applicant: Fujikura Ltd.
    Inventor: Kazutoshi Koshimizu
  • Intermittently connected optical fiber ribbon and method for manufacturing intermittently connected optical fiber ribbon
    Patent number: 11536922
    Abstract: An intermittently connected optical fiber ribbon includes optical fibers, disposed side by side in a width direction of the optical fibers, and connecting portions that each intermittently connect two adjacent ones of the optical fibers. A center-to-center distance between any of the two adjacent ones of the optical fibers is greater than a diameter of the individual optical fibers. A total volume shrinkage per meter per 1° C. of the connecting portions of a single one of the optical fibers is 0.00070 mm3/m·° C. or lower.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 27, 2022
    Assignee: Fujikura Ltd.
    Inventors: Soichiro Kaneko, Koji Tomikawa, Ken Osato
  • FILTER CIRCUIT
    Publication number: 20220399626
    Abstract: A filter circuit (1) includes a first transmission line (11), a second transmission line (12) which has an electrical length set to ½ of an electrical length of the first transmission line, a first capacitor (21), a second capacitor (22), and a third capacitor (23). Capacitances of the first capacitor, the second capacitor, and the third capacitor are set in such a manner that a circuit including the first transmission line, the second transmission line, and the first capacitor resonates in series at a predetermined fundamental frequency, a circuit including the first transmission line, the first capacitor, and the second capacitor resonates in parallel at a third harmonic frequency being a tripled frequency of the fundamental frequency, and a circuit including the second transmission line and the third capacitor resonates in series at the third harmonic frequency.
    Type: Application
    Filed: December 17, 2020
    Publication date: December 15, 2022
    Applicant: Fujikura Ltd.
    Inventor: Yo Yamaguchi
  • CLEANING TOOL
    Publication number: 20220397724
    Abstract: A cleaning tool includes: a head including: a pressing part that presses a cleaning element against an object to be cleaned in a pressing direction, and having a first dimension in a width direction orthogonal to the pressing direction; and a neck part having a second dimension smaller than the first dimension in the width direction; and a housing that houses the head such that the pressing part and the neck part protrude from the housing in the pressing direction. A length of the housing in the width direction is equal to or greater than a length of protrusion of the pressing part protruding from the housing in the pressing direction.
    Type: Application
    Filed: April 7, 2021
    Publication date: December 15, 2022
    Applicant: FUJIKURA LTD.
    Inventors: Shunsuke Fujita, Kunihiko Fujiwara
  • Reticulated tube, optical fiber protective unit, method for protecting optical fiber, and method for manufacturing reticulated tube
    Patent number: 11525972
    Abstract: A reticulated tube includes: a plurality of openings that are reticulately formed; peripheral parts that form the openings; and a branch part that is formed in a boundary of three or more openings. The branch part includes three or more peripheral parts extending from the branch part. The reticulated tube is configured to accommodate a plurality of optical fibers inserted through the reticulated tube. The peripheral parts are restricted by the branch part and are bendable.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: December 13, 2022
    Assignee: Fujikura Ltd.
    Inventors: Go Taki, Masayuki Ishioka, Mizuki Isaji, Tomoaki Kaji, Soichiro Kaneko, Koji Tomikawa, Akira Namazue, Ken Osato
  • OPTICAL FIBER CABLE AND METHOD FOR MANUFACTURING OPTICAL FIBER CABLE
    Publication number: 20220390701
    Abstract: An optical fiber cable includes: a core including optical fibers; an interposed layer including fibers wound around the core in an SZ shape; a reinforcing layer including metal and covering the interposed layer; and a sheath covering the reinforcing layer.
    Type: Application
    Filed: January 19, 2021
    Publication date: December 8, 2022
    Applicant: FUJIKURA LTD.
    Inventors: Okimi Mukai, Masatoshi Ohno, Ken Osato
  • Imaging module and endoscope
    Patent number: 11510550
    Abstract: An imaging module includes: an electrical cable; an imaging device; and a flexible wiring board with wirings electrically connecting the imaging device with the electrical cable. The flexible wiring board includes: a device mounting portion on which the imaging device is mounted, and one end of the device mounting portion in a longitudinal direction has a bent portion; and a rear portion that bends and extends from the bent portion to a side opposite the imaging device. The device mounting portion has a mounting surface intersecting an axial direction of a distal end of the electrical cable, and the imaging device is mounted on the mounting surface, and the wirings extend from the mounting surface, pass through the bent portion, and connect with the electrical cable at the rear portion.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: November 29, 2022
    Assignee: Fujikura Ltd.
    Inventors: Takao Sato, Hideo Shiratani
  • Semiconductor laser module and method of manufacturing semiconductor laser module
    Patent number: 11515689
    Abstract: A semiconductor laser module includes: an optical fiber that outputs a first laser beam to an exterior of the semiconductor laser module; semiconductor laser devices each including an emission portion that emits a second laser beam, an electrically conductive portion that supplies electric power to the emission portion, and a mount on which the emission portion and the electrically conductive portion are disposed; a mount base including mount surfaces that form steps; and an optical system that optically couples the second laser beams from the emission portions to an incident end face of the optical fiber. The mounts of the semiconductor laser devices are disposed on the mount surfaces. The semiconductor laser devices include an upper semiconductor laser device and a lower semiconductor laser device adjacent to each other in a step direction of the mount base.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: November 29, 2022
    Assignee: Fujikura Ltd.
    Inventors: Ken Katagiri, Yohei Kasai
  • OPTICAL FIBER PITCH CONVERSION JIG, OPTICAL CONNECTOR, PITCH CONVERSION CORD, OPTICAL CONVERSION BOX, AND PITCH CONVERSION METHOD FOR OPTICAL FIBERS
    Publication number: 20220373743
    Abstract: An optical fiber pitch conversion jig for converting a pitch among optical fibers by inserting the optical fibers from a first end of the optical fiber pitch conversion jig and making the optical fibers protrude from a second end of the optical fiber pitch conversion jig, the optical fiber pitch conversion jig includes: a groove portion including grooves extending from the first end to the second end, a first linear part on a side closer to the first end and in which a pitch among the grooves is a first pitch, and a pitch change part that is continuous with the first linear part and in which the pitch widens to a second pitch larger than the first pitch. In the pitch change part, at least one of the grooves is curved.
    Type: Application
    Filed: November 9, 2020
    Publication date: November 24, 2022
    Applicant: Fujikura Ltd.
    Inventors: Tomoyuki Shinoda, Masayuki Hirose, Takaaki Ishikawa, Shigeo Takahashi
  • Wireless communication module
    Patent number: 11509345
    Abstract: A wireless communication module includes a wireless module board including an antenna, a frequency converter mounted on the wireless module board and configured to change a frequency of a wireless signal, an amplifier phase shifter mounted on the wireless module board and configured to change a phase and an intensity of the wireless signal, a band-pass filter mounted on the wireless module board so as to be provided between the frequency converter and the amplifier phase shifter, and a band-rejection filter formed on the wireless module board and composed of at least a portion of a plurality of wiring layers electrically connecting the frequency converter, the amplifier phase shifter, and the band-pass filter to each other.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: November 22, 2022
    Assignee: FUJIKURA LTD.
    Inventor: Yuta Hasegawa
  • OPTICAL FIBER, LASER GENERATOR, LASER PROCESSING APPARATUS, AND METHOD OF MANUFACTURING OPTICAL FIBER
    Publication number: 20220362878
    Abstract: An optical fiber includes: a center core; an inner ring layer, located outside of the center core in a radial direction, that has a refractive index lower than a refractive index of the center core; an outer core, located outside of the inner ring layer in the radial direction, that has a refractive index higher than the refractive index of the inner ring layer; and an outer ring layer, located outside of the outer core in the radial direction, that has a refractive index lower than the refractive index of the outer core. A relative refractive index difference ?CF between the center core and the inner ring layer varies along a longitudinal direction such that the relative refractive index difference ?CF at a location along the longitudinal direction is smaller than a relative refractive index difference ?PF between the outer core and the outer ring layer.
    Type: Application
    Filed: May 27, 2020
    Publication date: November 17, 2022
    Applicant: FUJIKURA LTD.
    Inventor: Kensuke Shima
  • WIRING SUBSTRATE
    Publication number: 20220361330
    Abstract: A wiring substrate includes a first insulating layer, a first conductor layer, and a plurality of filled vias. The first insulating layer has a first surface and a second surface positioned on a side opposite to the first surface. The first conductor layer is formed on the first surface of the first insulating layer. The plurality of filled vias are formed inside the first insulating layer. The plurality of filled vias each have a structure in which a via hole penetrating the first insulating layer is filled with a metal. The first conductor layer includes a pad. The pad overlaps the plurality of filled vias in a plan view from a thickness direction of the first insulating layer and is connected to the plurality of filled vias.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 10, 2022
    Applicant: Fujikura Ltd.
    Inventors: Naoki Oyaizu, Yusuke Fujita, Toshiaki Inoue, Shinya Kashima
  • OPTICAL FIBER FUSE PROTECTION DEVICE, LASER DEVICE, AND METHOD
    Publication number: 20220357511
    Abstract: An optical fiber fuse protection device includes an upstream optical fiber disposed on an upstream side, a downstream optical fiber disposed on a downstream side, and a wall interposed between a part of the upstream optical fiber and a part of the downstream optical fiber. The downstream optical fiber is fusion-spliced to the upstream optical fiber and is made of a single optical fiber or a plurality of optical fibers fusion-spliced to each other.
    Type: Application
    Filed: March 24, 2020
    Publication date: November 10, 2022
    Applicant: FUJIKURA LTD.
    Inventor: Hiroyuki Taya
  • METHOD OF EXPOSING CORE OF OPTICAL FIBER CABLE AND OPTICAL FIBER CABLE
    Publication number: 20220342172
    Abstract: A method of exposing a core of an optical fiber cable that includes: a core including an optical fiber; a wrapping tube wrapping the core; a jacket housing the core and the wrapping tube; and a tension-resisting member of a Fiber Reinforced Plastic (FRP) embedded in the jacket, includes: making a cut in a circumferential direction in the jacket at a position closer to a first end portion of the optical fiber cable than to a second end portion of the optical fiber cable in a longitudinal direction; bending the optical fiber cable at a portion having the cut and fracturing the tension-resisting member; and removing a removal portion of the jacket that is disposed between the cut and the first end portion.
    Type: Application
    Filed: November 9, 2020
    Publication date: October 27, 2022
    Applicant: Fujikura Ltd.
    Inventors: Masatoshi Ohno, Okimi Mukai, Go Taki, Shogo Shimizu, Ryo Inagaki, Akira Namazue, Ken Osato
  • CABLE WIRING METHOD
    Publication number: 20220342173
    Abstract: An optical cable wiring method, includes: installing a bundle of optical cables from a utility pole as a starting point of a first wiring path to a branch point on the first wiring path; dividing, at the branch point, the bundle of optical cables into a first group and a second group; installing one of the optical cables in the first group along the first wiring path ahead of the branch point; and installing one of the optical cables in the second group along a second wiring path branching from the first wiring path.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 27, 2022
    Applicant: FUJIKURA LTD.
    Inventors: Go Taki, Akira Namazue, Ken Osato
  • CABLE AND CABLE REINFORCEMENT SHEET
    Publication number: 20220342168
    Abstract: A cable that protects an object includes: a sheath; and a cylindrical reinforcement member disposed inside the sheath and that surrounds the object. The cylindrical reinforcement member has a first side edge and a second side edge that extend in a longitudinal direction. The cylindrical reinforcement member is formed of a cable reinforcement sheet including: a first metal sheet; and a second metal sheet joined to the first metal sheet. A portion of the first metal sheet overlaps a portion of the second metal sheet, and the overlapping portions define a joint portion where the first metal sheet and the second metal sheet are joined. The joint portion is inclined, from the second side edge to the first side edge, toward the first metal sheet.
    Type: Application
    Filed: December 15, 2020
    Publication date: October 27, 2022
    Applicant: FUJIKURA LTD.
    Inventors: Akira Namazue, Tomoaki Kaji, Ken Osato