| 摘要 |
PROBLEM TO BE SOLVED: To provide a shutter device capable of surely preventing the leakage of light and attaining remarkable miniaturization. SOLUTION: In the shutter device, first, second and third sectors 1, 2 and 3 are freely turnably disposed on a shutter base plate 4 having an exposure aperture 41, the first sector 1 opens the exposure aperture 41 from an aperture 11 by rotation in the first direction and shields a part of the exposure aperture 41 by the rotation in the second direction and the second sector 2 and the third sector 3 open the exposure aperture 41 by the rotation in the second direction and shield a part of the exposure aperture 41 by the rotation in the first direction. The first - third sectors are cooperatively driven to the positions to open or shield the exposure aperture 41 by a driving pin 6.
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