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专利名称：DRIVING APPARATUS, LENS DRIVING
APPARATUS AND IMAGE PICKUPAPPARATUS
发明人：Haruo ONOZUKA申请号：US12046332申请日：20080311
公开号：US20080238251A1公开日：20081002
专利附图：
摘要：A driving apparatus comprises an actuator, the actuator comprising anelectromechanical conversion element and a driving shaft attached to the
electromechanical conversion element, wherein the driving apparatus expands andcontracts the electromechanical conversion element by applying a driving signal to theelectromechanical conversion element and reciprocally moves the driving shaft inaccordance with expansion and contraction movement of the electromechanical
conversion element so as to move a driven member frictionally engaged with the drivingshaft, and wherein the driving signal is a pulse signal, and a time period corresponding toa half wavelength of a damping vibration displacement of a lowest resonance frequencyin the actuator is set as a shorter output time among a high output time period and a lowoutput time period of the driving signal.
申请人：Haruo ONOZUKA
地址：Saitama-shi JP
国籍：JP
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