| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a very compact light amount adjustment device and an imaging apparatus.SOLUTION: A light amount adjustment device comprises: a light amount adjusting blade for adjusting a light amount in an optical passage; a rotor magnet served as a driving source of the light amount adjusting blade; a yoke having a pair of magnetic pole parts facing each other and sandwiching the rotor magnet between them; and a coil wound around the yoke. The rotor magnet and the coil are juxtaposed, and at least a portion of the pair of magnetic pole parts is provided in a part corresponding to a gap between the rotor magnet and the coil. In this invention, preferably, the pair of magnetic pole parts are disposed facing each other in a juxtaposed direction of the rotor magnet and the yoke.</p> |
