发明名称 |
Phase grating having an unprotected relief structure with a grating structure that causes destructive interference of reflections |
摘要 |
An uncovered unprotected phase grating includes a substrate which has a relief structure. The relief structure includes a high-refraction material so that even if soiled with impeding ambient media an adequate difference in the index of refraction exists and the diffraction effect is preserved.
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申请公布号 |
US5696584(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19960592641 |
申请日期 |
1996.01.26 |
申请人 |
JOHANNES HEIDENHAIN GMBH |
发明人 |
FRANZ, ANDREAS;HUBER, WALTER |
分类号 |
G02B5/18;(IPC1-7):G01B9/02 |
主分类号 |
G02B5/18 |
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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