| 摘要 |
PROBLEM TO BE SOLVED: To provide a light quantity controller capable of stably operating a shutter blade and an ND filter having a common unit configuration independently of each other and to provide an optical device and an imaging apparatus.SOLUTION: The light quantity controller includes a base plate in which an aperture part is formed, the shutter blade which is movable between a close state closing the aperture part and an open state opening the aperture part, a first coil which is attached to the shutter blade, a light quantity adjustment blade which is movable between an advancing state advancing to the aperture part and a retreating state retreating from the aperture part, a second coil which is attached to the light quantity adjustment blade, a magnet which is arranged to face the first and second coils, and control means which applies a voltage to the first and second coils, to control the shutter blade and the light quantity adjustment blade.SELECTED DRAWING: Figure 5 |
