Patents Assigned to Fujikura Ltd.
  • Patent number: 12062899
    Abstract: A bundling suspension wire includes: a suspension wire that includes a supporting wire and a coat coating the supporting wire; a hanger member that is suspended from the suspension wire and into which a cable is configured to be inserted; and wire threading cords that are inserted into the hanger member.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: August 13, 2024
    Assignee: Fujikura Ltd.
    Inventors: Go Taki, Ryo Inagaki, Ken Osato, Masayuki Ishioka
  • Publication number: 20240264340
    Abstract: An optical computing device includes stacked light diffraction layers contained in a dried gel and each including microcells that have respective refractive indexes set individually and are disposed in a matrix form.
    Type: Application
    Filed: August 3, 2022
    Publication date: August 8, 2024
    Applicant: Fujikura Ltd.
    Inventors: Yuichiro Kunai, Masahiro Kashiwagi
  • Publication number: 20240266088
    Abstract: A power supply cable includes a heat pipe including a container and an insulating layer formed on an outer periphery of the container, and a plurality of power lines disposed radially outside the heat pipe and including conductive wires.
    Type: Application
    Filed: February 3, 2022
    Publication date: August 8, 2024
    Applicant: Fujikura Ltd.
    Inventors: Randeep Singh, Akihiro Takamiya, Yoji Kawahara, Tsuyoshi Ogawa, Ichiro Terunuma, Takahiro Suga
  • Patent number: 12053157
    Abstract: An endoscope includes: an endoscope operation unit; an insertion observation unit that extends forward from the endoscope operation unit in a longitudinal direction; and a protective cap that covers the insertion observation unit and is detachably attached to the endoscope operation unit. The protective cap includes a color index portion that adjusts white balance. The color index portion is disposed inside the protective cap at a position facing a tip of the insertion observation unit, and the color index portion includes a curved surface in a sectional view in the longitudinal direction of the insertion observation unit.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: August 6, 2024
    Assignees: Fujikura Ltd., FiberTech Co., Ltd.
    Inventors: Masato Takigahira, Yusuke Matsuda
  • Publication number: 20240253260
    Abstract: An optical fiber cutting device includes: a pair of grippers that grip an optical fiber having a glass portion exposed from the optical fiber; a gripping force applier disposed in one or both of the pair of grippers and that generates and changes a gripping force; a tension applier that applies tension to the optical fiber by separating the pair of grippers from each other in a longitudinal direction of the optical fiber; a tension measuring sensor that measures the tension; a controller that controls the gripping force; and a blade disposed between the pair of grippers in the longitudinal direction and that forms a scratch on the glass portion.
    Type: Application
    Filed: May 20, 2022
    Publication date: August 1, 2024
    Applicant: Fujikura Ltd.
    Inventors: Shogo Tanaka, Yuya Kurosaka
  • Publication number: 20240258997
    Abstract: A digital phase shifter in which a plurality of digital phase shift circuits are connected in cascade. One of the digital phase shift circuits includes at least a signal line, a pair of inner lines provided at both sides of the signal line, a pair of outer lines provided outside of the pair of inner lines, a first ground conductor connected to each first ends of the pair of inner lines and the pair of outer lines, a second ground conductor connected to each second ends of the pair of outer lines, and a pair of electronic switches provided between each of the second ends of the pair of inner lines and the second ground conductor. The pair of outer lines adjacent to each other are separated between the digital phase shift circuits adjacent to each other and the first ground conductor and the second ground conductor adjacent to each other are separated between the digital phase shift circuits adjacent to each other.
    Type: Application
    Filed: August 9, 2022
    Publication date: August 1, 2024
    Applicant: Fujikura Ltd.
    Inventor: Yusuke Uemichi
  • Publication number: 20240258998
    Abstract: A digital phase shift circuit includes: a signal line that extends in a predetermined direction; a first inner line that is separated from a first side of the signal line; a second inner line that is separated from a second side of the signal line; an outer line that is provided at a position which is farther from the signal line than the first inner line or the second inner line on a first side or a second side; a first grounding conductor that is provided at each of first ends of the first inner line, the second inner line, and the outer line; a second grounding conductor that is provided at a second end of the outer line; a first electronic switch that is provided between a second end of the first inner line and the second grounding conductor; and a second electronic switch that is provided between a second end of the second inner line and the second grounding conductor.
    Type: Application
    Filed: August 18, 2022
    Publication date: August 1, 2024
    Applicant: Fujikura Ltd.
    Inventor: Yusuke Uemichi
  • Publication number: 20240258669
    Abstract: A digital phase shifter includes a plurality of digital phase shift circuits connected in cascade and one or more bend-type connection units each configured to make a connection between two digital phase shift circuits of the plurality of digital phase shift circuits. Each of the digital phase shift circuits includes at least a signal line, a pair of inner lines provided at both sides of the signal line, a pair of outer lines provided outside of the inner lines, a first ground conductor connected to one ends of the inner lines and the outer lines, a second ground conductor connected to the other ends of the outer lines, and a pair of electronic switches provided between the other ends of the inner lines and the second ground conductor. Each of the digital phase shift circuits is a circuit set in a low-delay mode in which a return current flows through the inner line or a high-delay mode in which a return current flows through the outer line.
    Type: Application
    Filed: August 8, 2022
    Publication date: August 1, 2024
    Applicant: Fujikura Ltd.
    Inventors: Yusuke Uemichi, Yo Yamaguchi
  • Publication number: 20240258670
    Abstract: A digital phase shift circuit includes: a signal line extending in a predetermined direction; two inner lines disposed on both one side and another side of the signal line and separated a predetermined distance from the signal line; two outer lines provided at positions which are farther from the signal line than the inner lines on both the one side and the other side; a first grounding conductor electrically connected to one end of each of the inner lines and the outer lines; and a second grounding conductor electrically connected to other ends of the outer lines, and the predetermined distance is set to be less than 10 ?m.
    Type: Application
    Filed: August 10, 2022
    Publication date: August 1, 2024
    Applicant: Fujikura Ltd.
    Inventor: Yusuke Uemichi
  • Publication number: 20240258759
    Abstract: A fiber laser includes: a gain fiber having a core doped with Yb; and a forward pumping light source group that generates forward pumping light that is inputted into the gain fiber and belongs to a 976-nm band. An absorption amount of the forward pumping light in a section of the gain fiber, calculated according to ?P(?)A(?)d?, is greater than or equal to 253 W and less than or equal to 1100 W where P(?) [W] is a power spectrum of the forward pumping light, and A(?) [%/m] is an absorption rate spectrum of the doped Yb. A length of the section is 1 m and includes an end face of the gain fiber on which the forward pumping light is incident.
    Type: Application
    Filed: November 30, 2021
    Publication date: August 1, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Ryoichi Nishimura, Kentaro Ichii
  • Publication number: 20240258700
    Abstract: An antenna substrate includes an antenna, a ground member arranged at an interval from the antenna in a thickness direction, and a feed line layer located between the antenna and the ground member in the thickness direction. An intermediate ground member electrically connected to the ground member and a feed line are arranged on the feed line layer. An excitation slit extending in a direction orthogonal to the thickness direction and a line slit extending in a direction orthogonal to both the direction in which the excitation slit extends and the thickness direction are formed in the intermediate ground member. The feed line is located inside of the line slit. The excitation slit extends to intersect the feed line as seen in the thickness direction.
    Type: Application
    Filed: August 17, 2022
    Publication date: August 1, 2024
    Applicant: Fujikura Ltd.
    Inventor: Yuta Hasegawa
  • Patent number: 12052007
    Abstract: A digital phase shifter in which a plurality of digital phase shift circuits are connected in cascade. One of the digital phase shift circuits includes at least a signal line, a pair of inner lines provided at both sides of the signal line, a pair of outer lines provided outside of the pair of inner lines, a first ground conductor connected to each first ends of the pair of inner lines and the pair of outer lines, a second ground conductor connected to each second ends of the pair of outer lines, and a pair of electronic switches provided between each of the second ends of the pair of inner lines and the second ground conductor. The pair of outer lines adjacent to each other are separated between the digital phase shift circuits adjacent to each other and the first ground conductor and the second ground conductor adjacent to each other are separated between the digital phase shift circuits adjacent to each other.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: July 30, 2024
    Assignee: FUJIKURA LTD.
    Inventor: Yusuke Uemichi
  • Publication number: 20240250665
    Abstract: A digital phase shifter includes: a plurality of digital phase shift circuits connected in a cascade manner, wherein each of the plurality of digital phase shift circuits includes a signal line, two inner lines provided on two sides of the signal line, two outer lines provided on outer sides of the inner lines, a first grounding conductor connected to one end of each of the inner lines and the outer lines, a second grounding conductor connected to other ends of the outer lines, and two electronic switches provided between other ends of the inner lines and the second grounding conductor, and is set to a low-delay mode in which return currents flow in the inner lines or a high-delay mode in which return currents flow in the outer lines, and wherein the digital phase shifter includes: a phase shift quantity moderator that moderates unevenness of a phase shift quantity of an uneven digital phase shift circuit of the plurality of digital phase shift circuits, of which the phase shift quantity is uneven with respec
    Type: Application
    Filed: August 5, 2022
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventor: Yusuke Uemichi
  • Publication number: 20240250703
    Abstract: An output control method for adjusting an output of a radio communication module includes a temperature adjustment step, a transmission step, a feedback control step, a measurement step, and an output control step. The temperature adjustment step sets a temperature of the radio communication module to a predetermined set temperature by a temperature adjusting mechanism. The transmission step has a first antenna transmit a radio signal by sending a transmission signal of a predetermined frequency to the radio communication module. The feedback control step controls an output of the transmission signal based on a comparative result between a power value obtained by detecting the transmission signal and a predetermined threshold value of power. The measurement step receives the radio signal by a second antenna, and measures an equivalent isotropic radiated power of the radio signal.
    Type: Application
    Filed: August 18, 2022
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventors: Taku Uchida, Yuki Suto
  • Publication number: 20240250401
    Abstract: A wireless module includes: a first substrate including an antenna that transmits and receives high-frequency signals in a millimeter-wave band, a first high-temperature element that supplies high-frequency signals to the antenna being mounted on the first substrate; and a housing including a cover and a case combined with each other and housing the first substrate, the first substrate is in contact with the cover in an opposing direction in which the case and the cover oppose each other, the case includes a first heat dissipation part protruding toward the first high-temperature element, a first heat dissipation sheet is provided between the first heat dissipation part and the first high-temperature element in the opposing direction, and the cover and the first heat dissipation part compress the first heat dissipation sheet and the first substrate in the opposing direction.
    Type: Application
    Filed: January 18, 2024
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventors: Noriaki Shigematsu, Masao Mori, Kiyoshi Kobayashi, Yuki Suto
  • Publication number: 20240250405
    Abstract: A wireless module includes a first board having an antenna, the antenna transmitting and receiving a high frequency signal in a millimeter wave band, a second board handling a baseband signal with a lower frequency than the high frequency signal, and a housing including a cover and a case combined with each other and accommodating the first board and the second board, in which a passage portion that allows electromagnetic waves transmitted and received by the antenna to pass through is provided in the cover, and the first board is fixed to the cover while being in contact with the cover.
    Type: Application
    Filed: January 12, 2024
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventors: Noriaki Shigematsu, Masao Mori, Kiyoshi Kobayashi, Yuki Suto
  • Publication number: 20240250052
    Abstract: A semiconductor package includes an RFIC chip, a mold resin that surrounds the RFIC chip in a planar view, a plurality of solder bumps, and a plurality of redistributors that connect the RFIC chip to the plurality of solder bumps, wherein a first bump group disposed in a position that overlaps with the RFIC chip in the planar view, and a second bump group disposed in a position that overlaps with the mold resin in the planar view are included in the plurality of solder bumps, in the second bump group, at least a high frequency bump connected to a high frequency terminal of the RFIC chip, and a GND bump connected to a GND terminal of the RFIC chip are included, and a minimum pitch in the second bump group is larger than a minimum pitch in the first bump group.
    Type: Application
    Filed: August 8, 2022
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventor: Michikazu Tomita
  • Publication number: 20240248270
    Abstract: An optical fiber cable includes optical fibers, a wrapping tube that wraps around the optical fibers and contacts outermost ones of the optical fibers, and a sheath that covers the wrapping tube and has recesses on an inner circumferential surface of the sheath. The recesses are recessed toward a radially outer side of the optical fiber cable such that a space exists between the wrapping tube and the sheath in each of the recesses.
    Type: Application
    Filed: April 20, 2022
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventors: Okimi Mukai, Ken Osato, Akira Namazue
  • Patent number: 12044885
    Abstract: A jig for a fusion splicer mountable on a heater of the fusion splicer includes: a plate part configured to face a heating part of the heater; a first retainer, configured to face a first clamp of the fusion splicer that is disposed outside of the heating part along a longitudinal direction of an object to be heated, and further configured to retain a first member extending from a first end of the object along the longitudinal direction; and a second retainer, configured to face a second clamp disposed on a side of the heating part opposite to the first clamp along the longitudinal direction, and further configured to retain a second member extending from a second end of the object along the longitudinal direction.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: July 23, 2024
    Assignee: Fujikura Ltd.
    Inventors: Keisuke Nishiguchi, Ririka Seino
  • Publication number: 20240241336
    Abstract: A manufacturing method for manufacturing an optical fiber ribbon, the manufacturing method includes intermittently forming, with a connecting device, connection parts between optical fibers measuring a load of the connecting device during the intermittent forming of the connection parts, and detecting an abnormality based on the load.
    Type: Application
    Filed: February 28, 2022
    Publication date: July 18, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Hironori Sato, Hiroyuki Takahashi, Itaru Ishida, Ken Osato