| 摘要 |
In a shutter mechanism, a driving member having a plurality of arms is rotatably mounted on a pivoted shutter operating member and is spring biased to turn relative to the operating member when released. In a first portion of its movement, the driving member engages an electronically controlled support member about which it pivots as a fulcrum so as to move the shutter-operating member in a direction to open the shutter. At the end of a selected exposure time the support member disengages from the driving member permitting it to rotate further in the same direction while engaging an abutment on the opposite side of the axis of the driving member so that the operating member is moved in the opposite direction to close the shutter.
|
