| 摘要 |
There is a risk that the operational characteristics of a shutter device change depending on the environment in which the shutter device is used or the frequency of usage. The present invention is provided with a detection means that detects the passage of a light shielding member through a prescribed position when the light shielding member moves between a closed state and an open state. On the basis of the detection result of the detection means, a control means changes a driving start timing for driving a stepping motor and/or the drive speed when driving the stepping motor. |
