发明名称 |
Standard reflective device |
摘要 |
A reflecting standard for an optical apparatus comprises a semitransparent crystal or glass which reflects from its front surface a predetermined proportion of the incident light dependent upon the index of refraction at the wavelength of the incident light. The rear surface of the reflector is disposed at an angle to the front surface and is provided with an antireflecting coating to minimize reflection therefrom.
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申请公布号 |
US4346996(A) |
申请公布日期 |
1982.08.31 |
申请号 |
US19800199973 |
申请日期 |
1980.10.23 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
MILLER, CARL E. |
分类号 |
G01N21/47;(IPC1-7):G01N21/55 |
主分类号 |
G01N21/47 |
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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