发明名称 |
Diffractive optical element |
摘要 |
The object is providing a multi-layer type diffractive optical element enhancing angular characteristic. A diffractive optical element includes a first diffractive element 6 and a second diffractive element 7 that is made of a material different from the first diffractive element 6 and is cemented with the first diffractive element 6 forming a diffraction grating 1 at the cemented surface. A shade film 5a is formed on a wall surface 3 of the groove of the diffraction grating 1.
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申请公布号 |
US2005018299(A1) |
申请公布日期 |
2005.01.27 |
申请号 |
US20030673229 |
申请日期 |
2003.09.30 |
申请人 |
NIKON CORPORATION |
发明人 |
TOKOYODA YOSHIFUMI;SUZUKI KENZABURO |
分类号 |
B32B17/10;G02B5/18;G02B27/00;(IPC1-7):G02B5/18 |
主分类号 |
B32B17/10 |
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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