发明名称 |
Measuring and control system for single lens reflex |
摘要 |
The exposure measuring system for single-lens reflex cameras, in which system the light passing through the objective lens is conveyed to the view finder eyepiece via a view finder reflex mirror, is provided with an additional mirror in the optical path of the camera, which additional mirror is partly translucent. A photo electric cell is pivotally mounted in order to be movable by linkage coupled with the reflex-mirror so that in one position during image viewing the cell receives light from the reflex mirror for light measurement and in another position during film exposure the cell receives light from the additional mirror for controlling exposure time.
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申请公布号 |
US4118718(A) |
申请公布日期 |
1978.10.03 |
申请号 |
US19770809050 |
申请日期 |
1977.06.21 |
申请人 |
VEB PENTACON DRESDEN KAMERA-UND KINOWERKE |
发明人 |
HAHN, WERNER;SCHULZE, HEINZ |
分类号 |
G03B7/099;G03B17/20;G03B19/12;(IPC1-7):G03B17/20 |
主分类号 |
G03B7/099 |
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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