Patent ID: 8224173

Claim:
An imaging apparatus having: a vibratory driving device which comprises a driving shaft, an electromechanical transducer consisting of a plurality of elongatable portions capable of elongating and contracting in an axial direction of the driving shaft respectively and integrated with each other, and a driving member slidably engaging on the driving shaft; an axially movable optical member of which position is restrained in the axial direction by the driving member; and a vertically movable optical member of which position is restrained in a direction perpendicular to the axial direction by the driving shaft, and wherein the plurality of elongatable portion uniformly elongates and contracts repeatedly at different speeds between the elongating direction and the contracting direction so as to displace the driving shaft back and forth asymmetrically in the axial direction to displace the driving member slidingly with respect to the driving shaft, and the elongatable portions unequally elongate or contract so as to bend the electromechanical transducer to incline the driving shaft to displace the driving member according to the inclination of the driving shaft.