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21. 发明专利

JPH0343603B2 失效
公开(公告)号：JPH0343603B2
公开(公告)日：1991-07-03
申请号：JP9349182
申请日：1982-05-31
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SAMEJIMA MASAHIDE , YAGI KENJI , UEMATSU AKIRA
IPC分类号： C03C25/10 , C03C25/24 , G02B6/44

22. 发明专利

JPH02263727A LIQUID SURFACE CONTROL DEVICE FOR MOLTEN GLASS 失效
公开(公告)号：JPH02263727A
公开(公告)日：1990-10-26
申请号：JP8299789
申请日：1989-03-31
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SAKAMOTO KEIICHI , YAGI KENJI
IPC分类号： G02B6/00 , C03B5/24 , C03B37/023
摘要： PURPOSE:To improve the durability of electrode and to carry out the liquid surface control of molten glass at high accuracy by lowering a the electrode into a crucible holding molten glass and electrically detecting the liquid surface when the electrode is brought in contact with the liquid surface of the molten glass. CONSTITUTION:An electrode 10a is lowered downwardly into a crucible 1 holding molten glass 2 while voltage is supplied from an electric power source 14. When the top end of the electrode 10a is brought into contact with the liquid surface of the molten glass 2, current is caused to flow from the electric power source 14 through the electrode 10a, molten glass 2 and the crucible which is detected by an electric current detecting part 15 and is inputted to a liquid surface control part 17 as a signal. When the top end position of the electrode 10a inputted to the liquid surface control part 17 is lower than the reference value, the instruction to increase the supply speed of clad glass is outputted to a supply control part 19a, and when it is higher than the reference value, the instruction to decrease the supply speed of glass is outputted to the part 19. On the other hand, the detected signal of the detecting part 15 is also inputted to a vertical movement control part 16, and the electrode 10a is raised to the direction to be far from the liquid surface of the molten glass 2 by an elevating unit 11a.

23. 发明专利

JPH0131462B2 失效
公开(公告)号：JPH0131462B2
公开(公告)日：1989-06-26
申请号：JP10695181
申请日：1981-07-10
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： YAGI KENJI
IPC分类号： C03B37/023 , C03B37/08 , G02B6/00

24. 发明专利

JPS6186443A Manufacture of flexible image guide 失效
标题翻译：柔性图像指南的制造
公开(公告)号：JPS6186443A
公开(公告)日：1986-05-01
申请号：JP20747584
申请日：1984-10-03
申请人： Showa Electric Wire & Cable Co Ltd
发明人： KOBATA NOBUO , SHIBUYA KIYOSHI , YAGI KENJI , SAITO OSAMU
IPC分类号： G02B6/04 , C03B37/028 , G02B6/06
CPC分类号： C03B37/028
摘要： PURPOSE:To obtain an image guide excellent in flexibility by welding only both ends of bundle of an optical fiber, providing the clearances to the intermediate parts of each optical fiber and thereafter spinning it in the low-temp. zone in softening point of glass. CONSTITUTION:Each optical fiber 1 is welded in only both ends of bundle of the optical fiber and the clearances are provided to the intermediate parts of each optical fiber 1. As the definite method, for example, there are a method wherein the intermediate point parts of plural optical fibers 1 are bent and both ends are welded from the side faces and a method providing mutually the clearances by forming the tapers 4 in the intermediate parts of each optical fiber 1. Thereafter the each optical fiber 1 is spun in the low-temp. zone is softening point of glass. Thereby the welding of side faces of the fellow glass can be prevented and an image guide having excellent flexibility can be obtained even if the number of the optical fiber is increased.
摘要翻译：目的：为了通过仅将光纤束的两端进行焊接来获得灵活性优异的图像引导件，为每个光纤的中间部分提供间隙，然后在低温下旋转。玻璃软化点区域。构成：仅将光纤1焊接在光纤束的两端，并且将间隙设置在各光纤1的中间部分。作为确定方法，例如有一种方法，其中中间点部分的多个光纤1弯曲，并且从侧面焊接两端，并且通过在每个光纤1的中间部分形成锥体4来提供相互间隙的方法。之后，每个光纤1在低光纤温度区域是玻璃的软化点。由此，可以防止玻璃的侧面的焊接，并且即使光纤的数量增加，也可以获得具有优异的柔性的图像引导件。

25. 发明专利

JPS55124109A PRODUCTION OF BUNDLE FIBER END 失效
公开(公告)号：JPS55124109A
公开(公告)日：1980-09-25
申请号：JP3070879
申请日：1979-03-16
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： YAGI KENJI , FUNIYUU MITSUHARU
IPC分类号： G02B6/04
摘要： PURPOSE:To manufacture the captioned end of good light-receiving efficiency by inserting the fiber end formed by filling the adhesive agent of the same refractive index as that of clads in the spacings of the bundle of a plurality of polymer clad fibers into a metal pipe and subjecting the same to area-reduction working. CONSTITUTION:The polymer-clad fibers 1 having the clads 3 coated with polymer, such as silicone, around cores 2 of quartz glass or the like are boundled and the bundle fiber 5 comprising filling the adhesive agent 4 having the same refractive index as that of the clads into the spacings of this bundle is inserted into a metal pipe 6. Next, the pipe 6 is passed in a die 7 in the arrow direction to undergo area- reduction working, whereby the clads 3 are deformed and the cores 2 are made dense and the bundle fiber end 8 having a desired section is manufactured.

26. 发明专利

JPS554021A OPTICAL FIBER CONNECTING METHOD 失效
公开(公告)号：JPS554021A
公开(公告)日：1980-01-12
申请号：JP7609278
申请日：1978-06-23
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： SASANO NAONARI , TAMAGAWA TERUHISA , KOBATA NOBUO , YAGI KENJI , SAKANAKA TETSUO
IPC分类号： G02B6/24 , G02B6/28 , G02B6/42
摘要： PURPOSE:To achieve the reduction in branching losses in connecting part by removing the clads near the joint part of optical fibers with hydrofluoric acid then thermally fusing the joint part to a photo detecting body. CONSTITUTION:When an optical fiber 1 is dipped for a fixed time in hydrofluoric acid, its clad layer 2 is removed and therefore thermally fusing this to the other optical fiber having no clad yields the optical fiber connected part having no effect of clad at all. When the optical fiber is gradually pulled up at the clad removing work, the neighborhood of the optical fiber joint part is shaped to taper form and therefore if the optical fibers having been treated in this way are provided, e.g., two pieces, side by side and are thermally fused, the entire part becomes of taper form and the layer 2 does not exist or the layer thickness is extremely thin at the end face 6 to be connected to the 3rd optical fiber and therefore the optical fiber connected part of low branching losses is formed. The optical fibers having been treated in this way may be directly thermally fused to a lens, optical guide, etc.

27. 发明专利

JPS54125727A PRODUCTION OF OPTICAL FIBERS CLAD WITH POLYMER 失效
公开(公告)号：JPS54125727A
公开(公告)日：1979-09-29
申请号：JP3093278
申请日：1978-03-20
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： YAGI KENJI , SHIBUYA KIYOSHI , IWAMOTO TOSHIO , SAKANAKA TETSUO
IPC分类号： C03C25/10 , C03B37/00 , G02B6/00
摘要： PURPOSE:After fibers made from quartz rod is coated with a polymer for inner layer and the polymer is cured, another polymer for the outer layer is coated thereon and crosslinked, thus producing effectively title optical fibers having plural clad layers with different reflactive indexes. CONSTITUTION:Quartz rod 1 is spun in furnace 2 into optical fiber F, which is coated with a polymer for the inner layer by dice 3 and cured by heating in furnace 4. Further, the resulting fiber is coated with another polymer for the outer layer by dice 5 and cured in the second furnace 6, and taken up on bobbin 7. The polymers for the outer and inner layers are selected so that each refractive index, qno, pno, and no of the inner layer polymer, the outer layer polymer and the core satisfy the relation: 1>p>q. Thus, without the interference between the outer and inner layers and mixing, are produced optical fibers with W-type distribution of refractive index.

28. 发明专利

JPS519286A 失效
公开(公告)号：JPS519286A
公开(公告)日：1976-01-24
申请号：JP7939974
申请日：1974-07-11
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： KOJIMA TAKESHI , YAGI KENJI
IPC分类号： H01B12/16 , H01B12/00

29. 发明专利

JPH11311726A COATED OPTICAL FIBER RIBBON 失效
公开(公告)号：JPH11311726A
公开(公告)日：1999-11-09
申请号：JP12091198
申请日：1998-04-30
申请人： SHOWA ELECTRIC WIRE & CABLE CO , NIPPON TELEGRAPH & TELEPHONE
发明人： YAGI KENJI , MURASE TOMOTAKA , SHIRAISHI KEIKO , MUTA KENICHI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a coated optical fibers capable of increasing the density of the optical fibers of an optical fiber cable and easily dealing with the high density of PLC, and having high fiber density. SOLUTION: This ribbon 10 is constituted by arraying in parallel optical fibers 11 each consisting of an optical fiber 13 formed by providing a clad layer on a core and a nopeeling thin layer 14 formed of synthetic resin having good adhesive strength to the clad layer of the optical fiber 13 and a 50 to 250 kg/mm Young's modulus at room temperature to a thickness of 2 to 15 μm, and providing a batch coating 12 in two-layered structure at the outer periphery by stacking a primary coating 15 of synthetic resin having a 0.01 to 0.5 kg/mm Young's modulus at room temperature and a secondary coating 16 of synthetic resin having a 10 to 200 kg/mm Young's modulus at room temperature in order.

30. 发明专利

JPH0933773A COATED OPTICAL FIBER TAPE 失效
公开(公告)号：JPH0933773A
公开(公告)日：1997-02-07
申请号：JP18902695
申请日：1995-07-25
申请人： SHOWA ELECTRIC WIRE & CABLE CO
发明人： YAGI KENJI
IPC分类号： C03C25/10 , G02B6/44 , C03C25/02
摘要： PROBLEM TO BE SOLVED: To provide the coated optical fiber tape which is prevented from increasing in loss due to water and high humidity and then improved in moisture resistance and water resistance by adjusting the water absorptivity of a layer with which an optical fiber is coated. SOLUTION: Of the coated optical fiber tape constituted by arranging coated optical fibers, formed by secondary layers 3 and colored layers 4 in order on the optical fibers 1 across primary layers 2, in order in parallel and providing a common jacket layer 5 thereupon, the primary layers 2, secondary layers 3, and colored layers 4 are so constituted that their water absorptivity, water absorption swelling rate, and heating loss in weight reduction are

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