发明名称 |
METHOD FOR DRAWING GLASS PARENT MATERIAL AND DRAWING MACHINE FOR USE THEREIN |
摘要 |
To provide a elongating method for elongating an optical fiber parent material with high reliability by implementing a high precision control for the outer diameter in short time. <??>This elongating method includes a process for switching a control method for at least one of the control items of measurement obj ect, based on at least one of a difference between measured value and target value and a change rate of the difference per unit time, in measuring the outer diameter of a glass parent material elongating portion and making a feedback control for the elongating conditions based on the difference from the target outer diameter. <IMAGE> |
申请公布号 |
EP1559691(A4) |
申请公布日期 |
2006.03.01 |
申请号 |
EP20030760876 |
申请日期 |
2003.06.17 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
KAWKAWASAKI, K;HOSHINO, SUMIO |
分类号 |
C03B23/047;C03B37/012 |
主分类号 |
C03B23/047 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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