| 发明名称 |
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| 摘要 |
An apparatus is provided for the production of a porous preform of SiO2 used in the manufacture of optical fiber wherein damage to the preform caused by falling clusters of SiO2 or GeO2 formed on the wall of the deposition chamber is eliminated. In accordance with the invention, a conductive shielding member is provided inside the wall defining the deposition chamber. This shielding member eliminates an electrostatic field produced on the wall by charging, therefore preventing the adherence of fine particles thereto. |
| 申请公布号 |
JPS632903(B2) |
申请公布日期 |
1988.01.21 |
| 申请号 |
JP19840069569 |
申请日期 |
1984.04.06 |
| 申请人 |
SUMITOMO ELECTRIC INDUSTRIES |
发明人 |
YOSHIDA MASAAKI;ENDO SHIGEKI;KISANUKI SHIGERU;KAKUZEN HIDEO |
| 分类号 |
C03B37/018;C03B19/14;C03B37/014;C03B37/12;G02B6/00 |
主分类号 |
C03B37/018 |
| 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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