| 摘要 |
A camera shutter includes a driving member rotated in forward and reverse directions by a motor and having first and second control portions. A switching circuit switches an operating starting position of the driving member between first and second positions. An opening member is controlled by the first control portion of the driving member and a first biasing member biases the opening member in the direction of opening the shutter. A first restraint member restrains an operation of the opening member and resists the bias of the first biasing member. A closing member is controlled by the second control portion of the driving member and a second biasing member biases the closing member in the direction of closing the shutter. A second restraint member restrains an operation of the closing member and resists the bias of the second biasing member. When the driving member starts its operation from the first position, the opening member is restrained by the first control portion of the driving member, and when the driving member starts its operation from the second position, the opening member is restrained by the first restraint member.
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