| 摘要 |
PROBLEM TO BE SOLVED: To provide a blade drive device and light-amount device, as well as imaging device that allow a stable drive of blades to be attained.SOLUTION: A blade drive device comprises: aperture formation members 1 and 7 that have an aperture part through which light passes; and a traverse blade 5 that rotates in a state where the traverse blade traverses aperture parts 1a and 7a of the aperture formation members 1 and 7. The traverse blade 5 has a rear end part 5f that partially protrudes on an opposite side in a blade advance direction of a side of the aperture parts 1a and 7a of one end part 5e serving as a free end, and the traverse blade 5 rotates over the aperture parts 1a and 7a as leaving a state with the rear end part 5f substantially overlapped with respect to a peripheral edge part of the aperture parts 1a and 7a.SELECTED DRAWING: Figure 1 |
