| 发明名称 |
OPTICAL ELEMENT AND OPTICAL SYSTEM HAVING THE SAME |
| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress generation of harmful light causing a flare and a ghost. <P>SOLUTION: An optical element 1 having a sub-wavelength structure formed on a lens surface 2a has the sub-wavelength structure formed on an edge part 3 and a film 4 formed on the sub-wavelength structure and opaque to light having a used wavelength region. <P>COPYRIGHT: (C)2009,JPO&INPIT |
| 申请公布号 |
JP2008276059(A) |
申请公布日期 |
2008.11.13 |
| 申请号 |
JP20070121744 |
申请日期 |
2007.05.02 |
| 申请人 |
CANON INC |
发明人 |
OKUNO TAKEHARU;SANO DAISUKE |
| 分类号 |
G02B3/00;G02B1/11;G02B3/02 |
主分类号 |
G02B3/00 |
| 代理机构 |
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代理人 |
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