发明名称 |
IMPROVED SHUTTER MECHANISM |
摘要 |
A shutter is rotatably mounted within a housing for opening and closing a shutter aperture formed in the housing. The shutter is coupled to a drive unit for unidirectionally rotating the shutter with the same velocity profile to open and close the shutter aperture during each exposure period. This drive unit includes a source of position and velocity data and a feedback loop configurable for either position or velocity control of the shutter as determined by a control command. |
申请公布号 |
JPS5661125(A) |
申请公布日期 |
1981.05.26 |
申请号 |
JP19800140370 |
申请日期 |
1980.10.07 |
申请人 |
OPTIMETRIX CORP |
发明人 |
EDOWAADO EICHI FUIRITSUPUSU;ROORENSU EE WAIZU |
分类号 |
G03B9/10;G03B9/58;G03F7/20;H01L21/027 |
主分类号 |
G03B9/10 |
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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