发明名称 |
Phase modulation holographic device for generating two different wavefronts |
摘要 |
A phase modulating device for spatially modulating a phase of an incident light beam is of a binary type having a plurality of rectangular protrusions on a cross section thereof. A distribution is provided to a diffraction efficiency at each point of the phase modulating device by varying a width of each protrusion.
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申请公布号 |
US5587815(A) |
申请公布日期 |
1996.12.24 |
申请号 |
US19930122372 |
申请日期 |
1993.09.15 |
申请人 |
MINOLTA CAMERA KABUSHIKI KAISHA |
发明人 |
SATO, AKIRA;HATANO, TAKUJI |
分类号 |
G02B5/32;G02B5/18;G03H1/08;(IPC1-7):G03H1/12 |
主分类号 |
G02B5/32 |
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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