An oscillatory wave motor, a lens barrel, and a camera system are provided, which have long service lives and which are stable. An oscillatory wave motor includes an oscillator which generates oscillation on an elastic member in accordance with excitation of an electromechanical conversion element, and...http://www.google.fr/patents/US7619348?utm_source=gb-gplus-shareBrevet US7619348 - Motor, lens barrel, camera system, and method for producing motor
Motor, lens barrel, camera system, and method for producing motor
