US Patent Application 20090303622 - VIBRATING ELEMENT, VIBRATION ACTUATOR, LENS BARREL, CAMERA SYSTEM AND METHOD FOR DRIVING VIBRATION ACTUATOR
InventorAssigneeUS Classes359/824, Electromagnetic or piezoelectric drive310/323.16, Eliptical motion at fixed point (i.e., walking) or Ratchet and Pawl motor310/317Input circuit for mechanical output from piezoelectric elementAttorney, Agent or FirmForeign Documents
International ClassesG02B 7/04H02N 2/12 H02N 2/14 Issued Patent Number:8159763Abstract textTo provide a vibrating element which can be driven by a low voltage, a vibration actuator, a lens barrel, a camera system and a method for driving a vibration actuator. A vibrating element (10) is provided with an elastically deformable tube-like member (11) having a hollow section (15); and an input sections (13 (13-1 to 13-4)), which are arranged on the outer surface of the tube-like member (11) and/or the inner surface of the tube-like member on the side of the hollow section (15), are divided into n (n is an integer of 3 or more) in the circumference direction of the tube-like member (11), and permit the tube-like member (11) to input a physical signal. |
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