Patent ID: 8348528

Claim:
A blade drive device comprising: a blade; a drive source that drives the blade; and a chassis that has an opening opened and closed by the blade, and that houses the blade and the drive source, the drive source comprising: a rotor that is rotatably supported; a stator, having a flat shape in an optical axis direction, around which a coil for excitation is wound and which applies a rotational force to the rotor, the stator, surrounding an axis of the opening, being formed along an inner side surface of the chassis and having a rectangular shape, wherein a thickness of the chassis corresponds to a thickness of the coil wound around the stator, the stator comprising a plurality of iron pieces of an identical shape mutually connected, and each of the plurality of iron pieces has a thin portion thinner than another portion at a connecting portion where the plurality of iron pieces are connected to each other, with the than portions in contact with each other, and a print substrate having a terminal portion for energizing the coil, wherein a connecting portion of one end of the coil and the terminal portion are housed within the chassis and are surrounded by the stator.