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公开(公告)号：US20190212512A1
公开(公告)日：2019-07-11
申请号：US16326097
申请日：2017-09-11
Applicant: FUJIKURA LTD.
Inventor： Tomoaki Kaji , Soichiro Kaneko , Mizuki Isaji , Kouji Tomikawa , Ken Osato
Abstract: An optical fiber unit includes a plurality of optical fibers; and two binding materials that bind the optical fibers. The two binding materials are wound around the optical fibers in an SZ shape, and are adhered to each other at respective reversed portions that form an adhesive part. The adhesive part has a plurality of intersection points of center lines of the two binding materials.
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12.发明授权公开(公告)号：US10185110B2
公开(公告)日：2019-01-22
申请号：US15101238
申请日：2015-11-05
Applicant: FUJIKURA LTD.
Inventor： Soichiro Kaneko , Mizuki Isaji , Ken Osato
IPC: G02B6/44
Abstract: To improve identifiability of optical fiber ribbons, an exemplary optical fiber ribbon of the invention includes: at least three optical fibers arranged side by side; and a plurality of connection parts that each connect two adjacent ones of the optical fibers, the connection parts being provided intermittently in a length direction of the optical fibers and in a width direction of the optical fibers. A marking for identifying the optical fiber ribbon is provided to each optical fiber. The position, in the circumferential direction, of the marking provided to at least one of the optical fibers is different from the position, in the circumferential direction, of the marking provided to another optical fiber.
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公开(公告)号：US20180292623A1
公开(公告)日：2018-10-11
申请号：US15578018
申请日：2016-03-09
Applicant: FUJIKURA LTD.
Inventor： Mizuki Isaji , Ken Osato , Naoki Okada
IPC: G02B6/44
CPC classification number: G02B6/447 , G02B6/44 , G02B6/4403 , G02B6/448 , G02B6/4482
Abstract: An optical fiber ribbon includes a plurality of optical fibers arranged side by side in a width direction. Each of the optical fibers includes a colored section that is colored by an identification color for identifying the optical fiber from the other optical fibers. The respective colored sections of the optical fibers are formed by coloring a portion, in a length direction, of the respective optical fibers according to a common pattern.
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公开(公告)号：US20210341695A1
公开(公告)日：2021-11-04
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.
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公开(公告)号：US20210278616A1
公开(公告)日：2021-09-09
申请号：US16340626
申请日：2017-11-17
Applicant: FUJIKURA LTD.
Inventor： Masatoshi Ohno , Shinnosuke Sato , Mizuki Isaji , Kouji Tomikawa , Akira Namazue , Ken Osato
IPC: G02B6/44
Abstract: An optical fiber cable includes a core that includes an assembled plurality of optical fibers; an inner sheath that accommodates the core therein, a pair of tension members that are embedded in the inner sheath and that are disposed on opposite sides of the core, and an outer sheath that covers the inner sheath. The inner sheath is formed with a dividing portion that divides an inner peripheral surface and an outer peripheral surface of the inner sheath in a circumferential direction. The dividing portion extends along a longitudinal direction in which the optical fiber cable extends.
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Patent Agency Ranking
公开(公告)号：US10746629B2
公开(公告)日：2020-08-18
申请号：US16324497
申请日：2017-08-07
Applicant: FUJIKURA LTD.
Inventor： Yuki Nemoto , Shengyang Luo , Masanobu Higuchi , Tatsushi Ogasawara , Mizuki Isaji , Tomoaki Kaji , Kouji Tomikawa , Ken Osato
Abstract: An inspection device of an optical fiber unit, including a plurality of binding materials wound in an SZ shape on a plurality of optical fibers, includes: a measurement sensor that measures a width of the optical fiber units in a first direction orthogonal to a longitudinal direction in which the optical fiber unit extends; and a determination circuit that determines a presence or an absence of an abnormality in a binding state, based on a measurement result of the measurement sensor.
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公开(公告)号：US10705304B2
公开(公告)日：2020-07-07
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.
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公开(公告)号：US10688740B2
公开(公告)日：2020-06-23
申请号：US16077150
申请日：2016-12-08
Applicant: FUJIKURA LTD.
Inventor： Shizuka Moriya , Mizuki Isaji , Ken Osato
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.
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公开(公告)号：US10670820B2
公开(公告)日：2020-06-02
申请号：US16326097
申请日：2017-09-11
Applicant: FUJIKURA LTD.
Inventor： Tomoaki Kaji , Soichiro Kaneko , Mizuki Isaji , Kouji Tomikawa , Ken Osato
Abstract: An optical fiber unit includes a plurality of optical fibers; and two binding materials that bind the optical fibers. The two binding materials are wound around the optical fibers in an SZ shape, and are adhered to each other at respective reversed portions that form an adhesive part. The adhesive part has a plurality of intersection points of center lines of the two binding materials.
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公开(公告)号：US10393983B2
公开(公告)日：2019-08-27
申请号：US15578018
申请日：2016-03-09
Applicant: FUJIKURA LTD.
Inventor： Mizuki Isaji , Ken Osato , Naoki Okada
IPC: G02B6/44
Abstract: An optical fiber ribbon includes a plurality of optical fibers arranged side by side in a width direction. Each of the optical fibers includes a colored section that is colored by an identification color for identifying the optical fiber from the other optical fibers. The respective colored sections of the optical fibers are formed by coloring a portion, in a length direction, of the respective optical fibers according to a common pattern.
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