| 发明名称 |
VARIABLE NEUTRAL DENSITY FILTER SYSTEM |
| 摘要 |
A variable neutral density filter system having a static housing ring and a rotating housing ring, each ring to which filters can be attached. The rings are rotatable with respect to one another. The variable neutral density filter system can be attached to a matte box and a camera lens. |
| 申请公布号 |
WO2015153213(A1) |
申请公布日期 |
2015.10.08 |
| 申请号 |
WO2015US22401 |
申请日期 |
2015.03.25 |
| 申请人 |
THE TIFFEN COMPANY, LLC |
发明人 |
SUBRATIE, ANDY;DUFFY, CAREY |
| 分类号 |
H01L27/00 |
主分类号 |
H01L27/00 |
| 代理机构 |
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代理人 |
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