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    METHOD AND DEVICE FOR MANUFACTURING GLASS TUBE
    1.
    发明公开
    METHOD AND DEVICE FOR MANUFACTURING GLASS TUBE 审中-公开
    方法和设备用于生产玻璃管

    公开(公告)号：EP1471040A4

    公开(公告)日：2005-08-17

    申请号：EP03703074

    申请日：2003-01-29

    申请人： SUMITOMO ELECTRIC INDUSTRIES

    发明人： MORIYA T ,  ONISHI M ,  SOHMA K ,  HIRANO M ,  YANADA E ,  ENOMOTO T

    IPC分类号： C03B19/14 ,  C03B23/045 ,  C03B23/047 ,  C03B23/049 ,  C03B37/012

    CPC分类号： C03B37/01254 ,  C03B19/1469 ,  C03B23/045 ,  C03B23/0493 ,  C03B23/0496 ,  Y02P40/57

    摘要： A method of manufacturing a glass tube (6), comprising the step of controlling a stress added to the inner peripheral side or outer peripheral side of the glass tube (6) when the glass material (3) is heated by a heating element (41) disposed around the glass material (3) for softening the glass material and the glass material (3) is gradually formed into the glass tube (6) by relatively press-fitting a boring tool (31) in the softened area of the glass material (3), wherein the control of the stress can be performed, for example, by controlling an internal pressure or an external pressure on the glass tube (6), whereby the high quality glass tube (6) can be provided by preventing the glass tube (6) from being deformed immediately after boring, and such a problem with the glass tube (6) that a residual stress after cooling is non-uniformed and cracking tends to occur at the time of re-heating can be solved.

    METHOD AND APPARATUS FOR MANUFACTURING OPTICAL FIBER
    2.
    发明公开
    METHOD AND APPARATUS FOR MANUFACTURING OPTICAL FIBER 审中-公开
    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON LICHTWELLENLEITERFASER

    公开(公告)号：EP1357404A4

    公开(公告)日：2004-12-15

    申请号：EP01981057

    申请日：2001-11-09

    申请人： SUMITOMO ELECTRIC INDUSTRIES

    发明人： SASAOKA E ,  ONISHI M ,  NAGAYAMA K

    IPC分类号： C03B37/03 ,  G02B6/00 ,  C03B37/027

    CPC分类号： C03B37/032 ,  C03B37/03 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/0228

    摘要： As a roller for guiding a coated optical fiber (200), there is used a torsion applying roller (220) having two axes of rotation (C1 and C2). The torsion applying roller (220) guides the optical fiber (200) by its rotation on the first rotation axis (C1) and applies a torsion to the optical fiber by its rotation on the second rotation axis (C2) along a circular locus shown by a dotted line (L2). The coated optical fiber (200) is wound by one turn on the torsion applying roller (220) along a V-groove (221) in the drawing. As a result, the rolling of the coated optical fiber (200) relative to the roller surface of the torsion applying roller (220) is suppressed, so that the torsion is efficiently applied to the optical fiber to reduce the polarization dispersion in the optical fiber sufficiently.

    摘要翻译： 使用具有两个旋转轴C1，C2的扭转赋予辊220作为用于引导涂覆光纤200的辊。扭转施加辊220围绕第一旋转轴线C1旋转以引导涂覆的光纤200并沿着圆形轨迹旋转 由虚线L2表示，围绕第二旋转轴线C2给光纤弯曲。 涂覆光纤200沿着扭转施加辊220周围的V形槽221卷绕。这抑制了涂覆光纤200相对于扭曲施加辊220的辊表面的滚动，以有效地赋予 扭转光纤并充分降低光纤中的偏振模色散。