发明名称 |
Base body of a reflecting mirror and method for the preparation thereof |
摘要 |
The invention provides a light-weight base body of a reflecting mirror such as a mirror in a reflecting astronomical telescope, which is very stable not only thermally but also mechanically and is highly resistant against adverse environmental influences. The mirror base is composed of a porous foamed disc body of fused quartz glass or high-silica glass sandwiched by two plates of fused quartz glass or high-silica glass, of which one is made from transparent glass and serves to provide an optical surface having flatness or a specified curvature, and the side surface of the porous foamed disc body is protected against environmental influences by providing an air-tight sealing layer formed from a silicone rubber-based sealing agent or a thin sheet of fused quartz glass or high-silica glass.
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申请公布号 |
US5563743(A) |
申请公布日期 |
1996.10.08 |
申请号 |
US19950418777 |
申请日期 |
1995.04.07 |
申请人 |
SHIN-ETSU QUARTZ CO, LTD.;OKAMOTO OPTICS WORK, INC. |
发明人 |
NAKAMURA, TATSUMASA;ISE, YOSHIAKI;OKAMOTO, YOSHIAKI |
分类号 |
C03B19/08;C03B19/09;C03B23/20;G02B5/08;(IPC1-7):G02B5/08 |
主分类号 |
C03B19/08 |
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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