公开(公告)号：US10247900B2

公开(公告)日：2019-04-02

申请号：US15511330

申请日：2016-08-31

Applicant: Fujikura Ltd.

Inventor： Akira Murata ,  Mizuki Isaji ,  Ken Osato ,  Naoki Okada

IPC: G02B6/44 ,  B29D11/00 ,  C08F2/48 ,  B29K83/00

Abstract: Disclosed is a method for manufacturing an intermittently connected optical fiber ribbon that includes a plurality of optical fibers arranged side by side, and connection parts arranged intermittently and each connecting two adjacent optical fibers. The method involves: a step of applying, between the optical fibers, a UV-curable resin including a siloxane structure in its molecule; a step of removing a portion of the UV-curable resin applied between the optical fibers; and a step of irradiating the UV-curable resin between the optical fibers with UV rays and forming the connection parts.

公开(公告)号：US20190022962A1

公开(公告)日：2019-01-24

申请号：US16077150

申请日：2016-12-08

Applicant: FUJIKURA LTD.

Inventor： Shizuka Moriya ,  Mizuki Isaji ,  Ken Osato

IPC: B29D11/00 ,  G02B6/44

Abstract: A method for manufacturing an optical fiber ribbon where adjacent optical fibers are intermittently connected in a length direction includes: feeding the optical fibers along the length direction; and intermittently applying a resin in the length direction by: rotating, between adjacent ones of the optical fibers, a rotating member having a recess, and blocking the resin with a peripheral edge part of the rotating member where the recess is not formed. A moving speed, in the length direction, of the peripheral edge part at a position where the peripheral edge part blocks the resin between the optical fibers is slower than a feeding speed of the optical fibers.

公开(公告)号：US20240219665A1

公开(公告)日：2024-07-04

申请号：US18425709

申请日：2024-01-29

Applicant: FUJIKURA LTD.

Inventor： Go Taki ,  Masayuki Ishioka ,  Mizuki Isaji ,  Tomoaki Kaji ,  Soichiro Kaneko ,  Koji Tomikawa ,  Akira Namazue ,  Ken Osato

IPC: G02B6/44

CPC classification number: G02B6/443 ,  G02B6/4486

Abstract: A fixing structure includes: an optical fiber group constituted by a plurality of optical fibers; a tubular member through which the optical fiber group is passed; a reticulated tube, one end part of the reticulated tube being disposed on an outer periphery of the tubular member, the optical fiber group being inserted through an extended section of the reticulated tube extending out from the tubular member; and a fixing member that fixes the tubular member which has the reticulated tube disposed on the outer periphery thereof.

公开(公告)号：US11525972B2

公开(公告)日：2022-12-13

申请号：US17282626

申请日：2019-09-18

Applicant: FUJIKURA LTD.

Inventor： Go Taki ,  Masayuki Ishioka ,  Mizuki Isaji ,  Tomoaki Kaji ,  Soichiro Kaneko ,  Koji Tomikawa ,  Akira Namazue ,  Ken Osato

IPC: G02B6/44

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.

公开(公告)号：US20220281708A1

公开(公告)日：2022-09-08

申请号：US17634363

申请日：2019-10-30

Applicant: FUJIKURA LTD.

Inventor： Mizuki Isaji ,  Koji Tomikawa ,  Ken Osato

IPC: B65H63/08

Abstract: An elongated-object drum includes: a drum on which an elongated object is wound; and a management module that is attached to the drum and comprises: an acceleration sensor that detects acceleration of the drum, a computation device that performs computation based on a detection result from the acceleration sensor, and a storage device that stores a computation result obtained by the computation device based on the detection result from the acceleration sensor.

公开(公告)号：US11256056B2

公开(公告)日：2022-02-22

申请号：US16078586

申请日：2016-11-08

Applicant: FUJIKURA LTD.

Inventor： Mizuki Isaji ,  Soichiro Kaneko ,  Ken Osato

IPC: G02B6/44 ,  C03C25/1065 ,  C03C25/326

Abstract: A method for manufacturing an optical fiber ribbon includes: forming a colored layer on to each of a plurality of optical fibers and forming an optical fiber ribbon by curing a connecting material applied to a surface of the colored layer of each of the optical fibers to form connection parts that connect adjacent ones of the optical fibers. Forming the colored layer further includes: applying a coloring agent to the optical fibers and curing the coloring agent such that uncured resin remains on the surface of the colored layer. Forming the optical fiber ribbon further includes: applying the connecting material to the surface with the uncured resin and curing the connecting material and the uncured resin on the surface of the colored layer.

公开(公告)号：US20210271042A1

公开(公告)日：2021-09-02

申请号：US17260792

申请日：2019-09-03

Applicant: Fujikura Ltd.

Inventor： Shinnosuke Sato ,  Mizuki Isaji ,  Koji Tomikawa ,  Ken Osato

IPC: G02B6/44

Abstract: An optical fiber cable includes: optical fiber units each having optical fibers; a wrapping tube that wraps around the optical fiber units; a filling disposed inside the wrapping tube; and a sheath that covers the wrapping tube. The optical fiber units includes outer units that are disposed at an outermost layer of the optical fiber units. The outer units are twisted in an SZ shape around a cable central axis of the optical fiber cable. The filling is sandwiched between one of the outer units and the wrapping tube in a cross-sectional view.

公开(公告)号：US10908373B2

公开(公告)日：2021-02-02

申请号：US16337873

申请日：2017-09-28

Applicant: FUJIKURA LTD.

Inventor： Akira Murata ,  Mizuki Isaji ,  Tomoaki Kaji ,  Yoshie Sajima

IPC: G02B6/44 ,  C03C25/1065

Abstract: An optical fiber ribbon is formed by connecting a plurality of optical fiber colored core wires to each other with a connector formed of a UV curable resin. Each of the optical fiber colored core wires includes: a bare optical fiber; a primary layer that comprises a UV curable resin that covers the bare optical fiber; a secondary layer that comprises a UV curable resin that covers the primary layer; and a colored layer disposed outside the secondary layer and that comprises a colored UV curable resin. The primary layer has a Young's modulus that is greater than or equal to 75% of a saturated Young's modulus of the primary layer.

公开(公告)号：US10704985B2

公开(公告)日：2020-07-07

申请号：US16068549

申请日：2016-07-14

Applicant: FUJIKURA LTD.

Inventor： Hiroyuki Takahashi ,  Mizuki Isaji

IPC: G01M11/00 ,  G01N21/898 ,  G02B6/44 ,  G01N21/892

Abstract: A method for inspecting an intermittent connection type optical fiber ribbon includes: accumulating one-dimensional images in a width direction of the intermittent connection type optical fiber ribbon, arranged intermittently with connection parts that connect adjacent optical fibers by repeatedly capturing images of the intermittent connection type optical fiber ribbon along the width direction while moving the intermittent connection type optical fiber ribbon in a longitudinal direction; and creating a two-dimensional image of the intermittent connection type optical fiber ribbon by aligning the one-dimensional images in a second direction orthogonal to a first direction where pixels configuring the one-dimensional image are aligned.

公开(公告)号：US20190317289A1

公开(公告)日：2019-10-17

申请号：US16462728

申请日：2017-12-22

Applicant: FUJIKURA LTD.

Inventor： Shizuka Sekine ,  Mizuki Isaji ,  Kouji Tomikawa

IPC: G02B6/44

Abstract: A method for manufacturing an intermittently-fixed optical fiber ribbon includes: collectively coating a plurality of optical fibers with a coating material by applying an uncured coating material that intrudes between the plurality of optical fibers and curing the intruded uncured coating material; and cutting the coating material positioned between the plurality of optical fibers at a predetermined interval in a longitudinal direction of the optical fibers with a plurality of rotary blades disposed side by side in a width direction orthogonal to the longitudinal direction, while delivering the collectively-coated optical fibers at a velocity V1 in the longitudinal direction. The velocity V1 is greater than a peripheral velocity V2 of the plurality of rotary blades.