发明名称 |
Aperture screen for the observation of bright objects with preservation of the resolution |
摘要 |
A screen for the reduction of light with preservation of the resolution comprising a plate with holes on distances equal or smaller than the light wavelength divided by the subtended angle of the object expressed in radians.
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申请公布号 |
US4390243(A) |
申请公布日期 |
1983.06.28 |
申请号 |
US19800198121 |
申请日期 |
1980.10.17 |
申请人 |
HAMMERSCHLAG, ROBERT H. |
发明人 |
HAMMERSCHLAG, ROBERT H. |
分类号 |
G02B5/00;G02B5/18;(IPC1-7):G02B5/00 |
主分类号 |
G02B5/00 |
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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