| 摘要 |
A light adjusting device includes a base plate having an aperture; at least one light adjusting member configured to adjust the amount of light passing through the aperture; and at least one electromagnetic driving source configured to rotate the light adjusting member. The light adjusting member is provided with a rotating shaft member having magnetism. The light passing through the aperture is adjusted by rotating the rotating shaft member by using the electromagnetic driving source. The electromagnetic driving source includes a yoke and a winding coil wound on the yoke. The electromagnetic driving source is disposed on the base plate such that both front end sections of the yoke face toward the rotating shaft member in an area near and including a constraining point.
|
