| 摘要 |
A shutter-driving device combined with a diaphragm of the present invention comprises a base member having a predetermined thickness, an aperture having a predetermined diameter and formed through the base member, and a light-adjusting member closing the aperture or adjusting the degree of opening thereof by driving a driving source. An ND filter capable of adjusting the intensity of light that passes through the aperture is supported by the base member. The movement of the ND filter is locked in a state where the aperture is not shielded when the light-adjusting member opens the aperture. In the state where the aperture is not shielded, the locking of the ND filter is released in synchronization with the operation of the light-adjusting member of closing the aperture so as to shield the aperture.
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