发明授权
- 专利标题： Process for producing glass preform for optical fiber
- 专利标题（中）： 光纤用玻璃预制棒的制造方法
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申请号： US260747申请日： 1994-06-15
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公开(公告)号： US5597398A公开(公告)日： 1997-01-28
- 发明人: Shinji Ishikawa , Yoshiki Chigusa , Motonori Nakamura , Yoshinori Makio , Morio Watanabe
- 申请人： Shinji Ishikawa , Yoshiki Chigusa , Motonori Nakamura , Yoshinori Makio , Morio Watanabe
- 申请人地址： JPX Osaka
- 专利权人： Sumitomo Electric Industries, Ltd.
- 当前专利权人： Sumitomo Electric Industries, Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX5-144746 19930616
- 主分类号： C03B37/014
- IPC分类号： C03B37/014 ; C03B37/018
摘要：
A process for producing a porous glass preform for optical fiber by depositing fine glass particles on an outer surface of a glass material while moving the glass material, including the steps of: preheating a portion of the glass material for not less than 5 minutes to clean the portion of the glass material in an apparatus for depositing fine glass particles; and depositing fine glass particles on the portion of the glass material cleaned by the preheating, in the apparatus for depositing fine glass particles.
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