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    • 5. 发明专利
    • Method for manufacturing optical fiber
    • 制造光纤的方法
    • JP2012188320A
    • 2012-10-04
    • JP2011053744
    • 2011-03-11
    • Sumitomo Electric Ind Ltd住友電気工業株式会社
    • ENOMOTO TADASHIOKAZAKI IWAOHAYAKAWA MASATOSHIUCHINO FUMITAKA
    • C03B37/027
    • C03B37/0253C03B2205/40
    • PROBLEM TO BE SOLVED: To heighten responsiveness of outer diameter control of an optical fiber, and to manufacture an optical fiber having a uniform outer diameter.SOLUTION: A first outer diameter measuring part 13 installed between a heating device 12 and a cooling device 14 measures a first outer diameter of a drawn optical fiber 23, and a second outer diameter measuring part 15 installed on the downstream side of the cooling device 14 measures a second outer diameter of the optical fiber 23, and a control part 21 sets a target value of the first outer diameter so that the second outer diameter agrees with a prescribed value, and further controls drawing speed so that the first outer diameter agrees with the target value of the first outer diameter.
    • 要解决的问题:提高光纤的外径控制的响应性,并制造具有均匀外径的光纤。 解决方案:安装在加热装置12和冷却装置14之间的第一外径测量部13测量拉制光纤23的第一外径和安装在拉伸光纤23的下游侧的第二外径测量部15 冷却装置14测量光纤23的第二外径,控制部21设定第一外径的目标值,使得第二外径与规定值一致,进一步控制拉伸速度,使得第一外径 直径与第一外径的目标值一致。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Line drawing method of optical fiber
    • 光纤线条绘图方法
    • JP2011144087A
    • 2011-07-28
    • JP2010007479
    • 2010-01-15
    • Furukawa Electric Co Ltd:The古河電気工業株式会社
    • AOKI YUDAIARIMA KIYOSHIWATANABE JUNPEI
    • C03B37/027
    • C03B37/0253C03B2205/40C03B2205/72
    • PROBLEM TO BE SOLVED: To provide a line drawing method of an optical fiber which can appropriately control line speed. SOLUTION: The line drawing method of an optical fiber in which one end of an optical fiber preform 1 consisting of glass is heated and melted, and a glass optical fiber 3 is line drawn from the end is characterized in that a total volume of the glass optical fiber which has been line drawn is measured, and controlling which alters a line speed of the glass optical fiber 3 is performed based on the total volume which has been measured. The line drawing method of an optical fiber desirably includes: a first line drawing process which line draws the glass optical fiber 3 at a first line speed; and a second drawing process which accelerates a line speed of the glass optical fiber 3 from the first line speed to a second line speed when the total volume which has been measured reaches a prescribed value. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供可以适当地控制线路速度的光纤的线描绘法。 解决方案:将由玻璃制成的光纤预制棒1的一端加热熔化,玻璃光纤3从一端引出直线拉拔的光纤的线拉拔法,其特征在于,总体积 测量已经被绘制的玻璃光纤,并且基于已经测量的总体积来执行改变玻璃光纤3的线速度的控制。 光纤的线拉拔方法优选包括:第一线拉拔工艺,其以第一线速度拉制玻璃光纤3; 以及当测量的总体积达到规定值时将玻璃光纤3的线速度从第一线速度加速到第二线速度的第二拉伸处理。 版权所有(C)2011,JPO&INPIT
    • 8. 发明专利
    • Optical fiber drawing unit, and its control program
    • 光纤绘图单元及其控制程序
    • JP2006151728A
    • 2006-06-15
    • JP2004343157
    • 2004-11-26
    • Kobe Steel LtdShowa Electric Wire & Cable Co Ltd昭和電線電纜株式会社株式会社神戸製鋼所
    • MIYAMOTO TOSHIYUKISAKAMOTO KEIICHIKANEKO TAKAO
    • C03B37/027G02B6/00
    • C03B37/0253C03B2205/40Y02P40/57
    • PROBLEM TO BE SOLVED: To provide a stable drawing control capable of generating no hunting, overshooting, etc., while restraining the makeup time (or accelerating time) at the non-steady state operation (transient state) of an optical fiber drawing unit. SOLUTION: This is an optical fiber drawing unit in which a melt material from a preform is drawn while sending the preform to a drawing furnace where it is heated and melted, and the set value P1-P8 of the change quantity of stepwise drawing speed which depends on the change of the drawing speed is remembered, and the target change quantity ΔV dt _ target , which changes continuously in response to the change quantity of the actual drawing speed v, is obtained by a linear interpolation calculation using the set value P1-P8 of the change quantity of the drawing speed, and the sending speed of the preform is controlled based on the difference of the target change quantity ΔV dt _ target of the drawing speed and the actual drawing speed change quantity. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种稳定的绘图控制,能够抑制光纤的非稳态操作(瞬态)时的补充时间(或加速时间),不产生振荡,超调等。 绘图单位。 解决方案:这是一种光纤拉伸单元,其中来自预成型件的熔体材料被拉伸,同时将预成型件送入其中被加热和熔化的拉拔炉,并且步进的变化量的设定值P1-P8 记住取决于拉拔速度的变化的拉拔速度,并且响应于实际的变化量而连续变化的目标变化量ΔV _ 目标 通过使用设定值P1-P8的拉拔速度的变化量的线性插补计算得到拉伸速度v,并且基于目标变化量ΔV dt的差来控制预成型体的送出速度 _ 目标的拉伸速度和实际拉拔速度变化量。 版权所有(C)2006,JPO&NCIPI
    • 9. 发明专利
    • Method and apparatus for drawing optical fiber
    • 绘制光纤的方法和装置
    • JP2004161545A
    • 2004-06-10
    • JP2002329914
    • 2002-11-13
    • Sumitomo Electric Ind Ltd住友電気工業株式会社
    • KUWABARA KAZUYACHIGUSA YOSHIKI
    • G02B6/00C03B37/025C03B37/027C03B37/029
    • C03B37/029C03B37/0253C03B2205/10C03B2205/40C03B2205/72C03B2205/80C03B2205/81C03B2205/82C03B2205/83
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for drawing an optical fiber, by which gas seal drawing can be performed stably. SOLUTION: When the optical fiber 40b is manufactured by blowing a gas 15 to an optical fiber preform 30, at the same time, sealing the inside of a drawing furnace 20 by seal rings 14U, 14L provided at the upper part and the lower part of the drawing furnace 20, respectively, and heating and melting the tip end part of the optical fiber preform 30 while introducing the optical fiber preform 30 into the drawing furnace 20, the gas 15 is blown while changing the inner diameter of the upper seal ring 14U according to the outer diameter of the optical fiber preform 30 fed into the drawing furnace 20. Thereby, it is possible to stably perform drawing because the gap between the optical fiber preform 30 and the upper seal ring 14U can be kept constant even when the outer diameter of the optical fiber preform 30 changes. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种用于拉伸光纤的方法和装置,通过该光纤可以稳定地进行气体密封拉伸。 解决方案:当光纤40b通过将气体15吹到光纤预制棒30而制造时,同时通过设置在上部的密封环14U,14L密封拉丝炉20的内部, 分别在拉丝炉20的下部加热熔化光纤预制件30的前端部,同时将光纤预制件30引入拉拔炉20中,同时改变上部的内径 密封环14U根据供给到拉拔炉20的光纤预成型件30的外径。由此,能够稳定地进行拉伸,因为光纤预制棒30与上密封环14U之间的间隙能够保持恒定 当光纤预制棒30的外径变化时。 版权所有(C)2004,JPO