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1. 发明公开

EP4231073A1 OPTICAL FIBER RIBBON 审中-实审
公开(公告)号：EP4231073A1
公开(公告)日：2023-08-23
申请号：EP21882736.8
申请日：2021-10-15
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： IWAGUCHI Noriaki , FUJII Takashi , SATO Fumiaki
IPC分类号： G02B6/44
摘要： An optical fiber ribbon (1A) is provided with a plurality of coated optical fibers (11) arranged in parallel in a direction orthogonal to the longitudinal direction thereof, and a collective covering layer (20) that covers the respective outer peripheries of the plurality of coated optical fibers (11). The collective covering layer (20) includes a coupling part (21) that couples adjacent coated optical fibers (11) in at least some of the plurality of coated optical fibers (11). The outer diameters of the plurality of coated optical fibers (11) are each 215 µm or less. In the cross-sectional view of the coated optical fibers (11), the collective covering layer (20) is provided with a thick portion (22), and at least two thin portions (23) in which the thickness of the collective covering layer (20) is smaller than the thickness of the collective covering layer (20) in the thick portion (22). The difference between the thickness of the collective covering layer (20) in the thick portion (22) and the thickness of the collective covering layer (20) in the thin portion (23) is 5-19 µm.

2. 发明公开

EP4119997A1 OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE 审中-实审
公开(公告)号：EP4119997A1
公开(公告)日：2023-01-18
申请号：EP21767730.1
申请日：2021-01-18
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： IWAGUCHI Noriaki , FUJII Takashi , SATO Fumiaki
IPC分类号： G02B6/44
摘要： An optical fiber ribbon comprises a plurality of optical fibers arranged in parallel and a connecting resin layer containing a ribbon resin for coating and connecting the plurality of optical fibers, wherein each of the plurality of optical fibers has an outer diameter of 220 µm or less; each of the plurality of optical fibers includes a glass fiber, a primary resin layer, and a colored secondary resin layer; the colored secondary resin layer contains a cured product of a resin composition containing 2,4,6-trimethylbenzoyldiphenylphosphine; and a content of phosphorus in the colored secondary resin layer is 0.03 mass% or more and 0.30 mass% or less, and an amount of a phosphorus-tin complex at the surface of the colored secondary resin layer is 300 ppm or more and 7000 ppm or less.

3. 发明公开

EP3435129A1 MANUFACTURING METHOD AND MANUFACTURING DEVICE FOR OPTICAL FIBER RIBBON CORE-WIRE 有权
公开(公告)号：EP3435129A1
公开(公告)日：2019-01-30
申请号：EP17770295.8
申请日：2017-03-22
申请人： Sumitomo Electric Industries, Ltd.
发明人： ISHIKAWA Hiroki , SATO Toshihisa , SATO Fumiaki , ISHIKAWA Masahiko
IPC分类号： G02B6/44
摘要： In a step of intermittently applying an adhesive resin, while rotating an adhesive resin conveying roller formed by alternately laminating a disk-like fiber roller installed in a pass line, a disk-like partition plate having a diameter larger than that of the fiber roller and including a gap portion for holding the adhesive resin in a part of the vicinity of a peripheral edge portion in a circumferential direction, the adhesive resin conveying roller is immersed in the adhesive resin, which is not cured, to hold the adhesive resin in the gap portion, and then the optical fibers are brought into contact with the partition plate such that the partition plate is sandwiched between the optical fibers in running, so as to intermittently apply the adhesive resin held in the gap portion to the optical fibers in a longitudinal direction.

4. 发明公开

EP3923052A1 INTERMITTENT CONNECTION-TYPE OPTICAL FIBER TAPE CORE WIRE, OPTICAL FIBER CABLE, AND METHOD FOR MANUFACTURING INTERMITTENT CONNECTION-TYPE OPTICAL FIBER TAPE CORE WIRE 审中-实审
公开(公告)号：EP3923052A1
公开(公告)日：2021-12-15
申请号：EP20752474.5
申请日：2020-02-05
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： SATO Fumiaki , NAGAO Yoshiaki , AMANO Tsuguo , TAKAHASHI Ken , IWAGUCHI Noriaki , HAMAKUBO Katsushi , FUJII Takashi
IPC分类号： G02B6/44
摘要： Provided is an intermittently coupled-type optical fiber ribbon in which, in a state where a plurality of optical fibers are arranged in parallel, coupling portions at which adjacent optical fibers are coupled by a coupling resin and non-coupling portions at which the adjacent optical fibers are not coupled are intermittently provided in a longitudinal direction, the coupling portions and the on-coupling portions being provided between some or all of the plurality of optical fibers, in which at least some of the non-coupling portions include a convex portion of the coupling resin, a tip end of the convex portion having an acute angle in a cross-sectional view in a direction orthogonal to the longitudinal direction.

5. 发明公开

EP3742211A1 METHOD AND APPARATUS FOR MANUFACTURING OPTICAL FIBER TAPE CORES 审中-实审
公开(公告)号：EP3742211A1
公开(公告)日：2020-11-25
申请号：EP19740981.6
申请日：2019-01-17
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： SATO Fumiaki , SUEMORI Shigeru , ISHIKAWA Hiroki , ISHIKAWA Masahiko , YOSHIZAWA Fumikazu
IPC分类号： G02B6/44
摘要： Provided is a manufacturing method of an optical fiber ribbon for manufacturing an intermittent-connection-type optical fiber ribbon including a connection part and a non-connection part. The manufacturing method includes: a release agent applying process of intermittently applying a release agent for preventing optical fibers from being bonded to each other with a connection resin in a longitudinal direction of the optical fibers in a state where the optical fibers are arranged in parallel; and a connection resin applying process of allowing the optical fibers in the state of being arranged in parallel to pass through a die for applying the connection resin around the optical fibers after the release agent applying process, and of curing the connection resin.

6. 发明公开

EP3410167A1 OPTICAL FIBER CABLE 有权
公开(公告)号：EP3410167A1
公开(公告)日：2018-12-05
申请号：EP17744347.0
申请日：2017-01-26
申请人： Sumitomo Electric Industries, Ltd.
发明人： SATO Fumiaki , OKADA Keisuke , NAGAO Yoshiaki , SUZUKI Nobuyuki
IPC分类号： G02B6/44
CPC分类号： G02B6/4495 , G02B6/44 , G02B6/4492
摘要： An optical fiber cable comprises an optical unit having a plurality of stranded optical fiber ribbons, a tube having the optical unit accommodated therein, and a cable sheath covering an outer side of an assembly including a plurality of the tubes, each optical fiber ribbon is intermittently provided with coupling portions, at which adjacent optical fibers are coupled therebetween, and non-coupling portions, at which adjacent optical fibers are not coupled therebetween, in a longitudinal direction between a part or all of the optical fibers in a state where the optical fibers are arranged in parallel, each tube has a Young's modulus lower than a Young's modulus of the cable sheath, and the assembly is in a state where a part of the tubes is in surface contact with the cable sheath with the tubes being elastically deformed with respect to another tube inside the cable sheath.

7. 发明公开

EP3404460A1 INTERMITTENT-CONNECTION-TYPE OPTICAL FIBER TAPE CORE, OPTICAL CABLE, AND METHOD FOR MANUFACTURING INTERMITTENT-CONNECTION-TYPE OPTICAL FIBER TAPE CORE 审中-公开
公开(公告)号：EP3404460A1
公开(公告)日：2018-11-21
申请号：EP16885120.2
申请日：2016-12-22
申请人： Sumitomo Electric Industries, Ltd.
发明人： SATO Fumiaki , OKADA Keisuke , NAGAO Yoshiaki , SUZUKI Nobuyuki , SHIMODA Yuuki
IPC分类号： G02B6/44
CPC分类号： G02B6/4404 , G02B6/44 , G02B6/441 , G02B6/448 , G02B6/4482
摘要： An intermittent-connection-type optical fiber ribbon includes: a plurality of optical fiber core wires that are disposed in parallel; a connecting resin that is coated on surfaces of the plurality of optical fiber core wires; and slits that are provided intermittently in the connecting resin partially between the optical fiber core wires in a longitudinal direction, and a marking is on the connecting resin.

8. 发明公开

EP4451028A1 OPTICAL FIBER CABLE 审中-实审
公开(公告)号：EP4451028A1
公开(公告)日：2024-10-23
申请号：EP22907534.6
申请日：2022-12-16
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： SATO Fumiaki , NAKAYAMA Shuhei , SHIMODA Yuuki , NAKANISHI Tetsuya , HAYASHI Tetsuya
IPC分类号： G02B6/44 , G02B6/02
CPC分类号： G02B6/44 , G02B6/02
摘要： An optical fiber cable (2) comprises a plurality of coated optical fibers (21), and an outer sheath (23) that covers the plurality of coated optical fibers (21) from the outer sides thereof. Each of the plurality of coated optical fibers (21) is a multicore fiber having a plurality of cores, and the glass diameter of each of the plurality of coated optical fibers (21) is larger than 125 µm, and the core density is 11 cores /mm2 or more.

9. 发明公开

EP3742212A1 OPTICAL FIBER CABLE 有权
公开(公告)号：EP3742212A1
公开(公告)日：2020-11-25
申请号：EP19741726.4
申请日：2019-01-17
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： SATO Fumiaki , TSUCHIYA Kenta , RYAN Kuushin
IPC分类号： G02B6/44
摘要： An optical fiber cable having a slot core which includes a plurality of ribs formed along a cable longitudinal direction and in which slot grooves for housing optical fibers are formed between the ribs. The optical fiber cable includes: subunits each of which is formed by bundling a plurality of intermittent-connection-type optical fiber ribbons in which a connection part where adjacent optical fibers are connected to each other and a non-connection part where adjacent optical fibers are not connected to each other are intermittently provided in the longitudinal direction among some or all of optical fibers; and a thin-skin-shaped tube having Young's modulus lower than Young's modulus of a material forming the slot core. The subunits are housed in the slot grooves, and among the subunits in the slot grooves, at least a subunit located at an outer peripheral part of the slot grooves is covered with the tube.

10. 发明公开

EP3470900A1 OPTICAL FIBER CABLE 有权
公开(公告)号：EP3470900A1
公开(公告)日：2019-04-17
申请号：EP17813452.4
申请日：2017-08-08
申请人： Sumitomo Electric Industries, Ltd.
发明人： SATO Fumiaki , FUJITA Taro , YANAGAWA Nayu , NAGAO Yoshiaki , SUZUKI Nobuyuki
IPC分类号： G02B6/44
摘要： An optical fiber cable includes optical fiber ribbons, a slot rod and a cable jacket. The slot rod has a plurality of slot grooves in which the optical fiber ribbons are housed. The cable jacket covers an outside of the slot rod. The optical fiber ribbons respectively have, in a state in which a plurality of optical fibers having an outer diameter of 0.22 mm or less are arranged in parallel, connecting portions at which adjacent ones of the optical fibers are connected to one another and non-connecting portions at which adjacent ones of the optical fibers are not connected to one another. The connecting portions and the non-connecting portions are provided intermittently in a longitudinal direction between a part of or all of the optical fibers. A density of core number of the optical fibers included in the optical fiber cable is 4.8 cores / mm 2 or more in a cross section of the optical fiber cable.

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