发明名称 |
Photographic camera apparatus for visually indicating the status of an exposure trim mechanism |
摘要 |
A photographic camera of the type having an automatic exposure control system which regulates the exposure delivered to a film of predetermined speed and which includes a manually operable exposure trim mechanism which varies the control of the exposure control system in accordance with the trim mechanism's position is provided with apparatus by which a visual indication of the status of the trim mechanism is provided in the camera's viewfinder.
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申请公布号 |
US4200373(A) |
申请公布日期 |
1980.04.29 |
申请号 |
US19780929840 |
申请日期 |
1978.07.31 |
申请人 |
POLAROID CORP |
发明人 |
JOHNSON, BRUCE K |
分类号 |
G03B17/20;(IPC1-7):G03B17/20 |
主分类号 |
G03B17/20 |
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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