| 发明名称 |
ND FILTER AND TELEVISION CAMERA, AND MANUFACTURING METHOD OF ND FILTER |
| 摘要 |
An ND filter, comprising: A transparent board formed in a disk shape, wherein two or more regions having light transmittances differing stepwise from one another are continuously formed in a circumferential direction of the transparent board formed in a disk shape.
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| 申请公布号 |
US2010259824(A1) |
申请公布日期 |
2010.10.14 |
| 申请号 |
US20100759067 |
申请日期 |
2010.04.13 |
| 申请人 |
MITSUHASHI SEIJI;YAMAZAKI JUNICHI;ODAWARA KUNIHARU;SAITA ARIHIRO;ISOZAKI MAKOTO;OZAKI TAKAO |
发明人 |
MITSUHASHI SEIJI;YAMAZAKI JUNICHI;ODAWARA KUNIHARU;SAITA ARIHIRO;ISOZAKI MAKOTO;OZAKI TAKAO |
| 分类号 |
G02B5/28;B05D5/06;G02B5/20 |
主分类号 |
G02B5/28 |
| 代理机构 |
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代理人 |
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