Driving device capable of obtaining a stable frequency characteristic

摘要

A driving device (20) includes an electro-mechanical transducer (441) having first and second end portions (441a, 441b) opposite to each other in an expansion/contraction direction, a static member (442) coupled to the first end portion of the electro-mechanical transducer, a vibration friction portion (443) mounted to the second end portion of the electro-mechanical transducer, and a rod-shaped moving portion (423) frictionally coupled to the vibration friction portion, whereby moving the moving portion (423) in the expansion/contraction direction of the electro-mechanical transducer The driving device (30) is covered with a cabinet (30). An elastic member (446) lies between the cabinet (30) and the static member (442).