Driving apparatus, lens driving apparatus and imag

专利名称：Driving apparatus, lens driving apparatus

and image pickup apparatus

发明人：Onozuka, Haruo,Ichimiya, Takeshi,Tokumiya,

Motoyoshi

申请号：EP08004486.0申请日：20080311公开号：EP1976035A2公开日：20081001

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 half of a time period

corresponding to a reciprocal of a lowest resonance frequency in the actuator is set as ashorter output time among a high output time period and a low output time period ofthe drive signal.

申请人：Fujinon Corporation

地址：1-324 Uetake-cho, Kita-ku Saitama-shi, Saitama JP

国籍：JP

代理机构：Klunker . Schmitt-Nilson . Hirsch

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