DRIVING APPARATUS, LENS DRIVING APPARATUS AND IMAG

专利名称：DRIVING APPARATUS, LENS DRIVING

APPARATUS AND IMAGE PICKUPAPPARATUS

发明人：Haruo Onozuka,Takeshi Ichimiya,Motoyoshi

Tokumiya

申请号：US12045544申请日：20080310

公开号：US20080238250A1公开日：20081002

专利附图：

摘要：A driving apparatus comprises an actuator, the actuator comprising an

electromechanical 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：Haruo Onozuka,Takeshi Ichimiya,Motoyoshi Tokumiya

地址：Saitama-shi JP,Saitama-shi JP,Saitama-shi JP

国籍：JP,JP,JP

更多信息请下载全文后查看