公开(公告)号：US06943481B2

公开(公告)日：2005-09-13

申请号：US10157826

申请日：2002-05-31

申请人： Takuji Okamoto ,  Eiichi Yanagi ,  Masaharu Suzuki ,  Yoshifumi Nishimoto ,  Hirokazu Hashidume ,  Osamu Yanase

发明人： Takuji Okamoto ,  Eiichi Yanagi ,  Masaharu Suzuki ,  Yoshifumi Nishimoto ,  Hirokazu Hashidume ,  Osamu Yanase

IPC分类号： H01L41/09 ,  H02N2/16 ,  H01L41/08

CPC分类号： H02N2/163

摘要： The present invention has been devised in order to raise driving efficiency of the vibration wave driving apparatus. A vibration member of a vibration wave driving apparatus of the present invention comprises the vibration member constituted of an elastic member and an electro-mechanical energy conversion element, and a rotor contacting the vibration member, and the vibration member generates a travelling wave in the elastic member when an alternating signal is applied to the electro-mechanical energy conversion element, in which an electrode film provided on a surface of the electro-mechanical energy conversion element of the vibration member is divided into a plurality of circular areas with different radiuses and each circular area is divided into a plurality of electrodes along its peripheral direction.

摘要翻译： 为了提高振动波驱动装置的驱动效率，已经设计了本发明。 本发明的振动波驱动装置的振动部件包括由弹性部件和机电能量转换元件构成的振动部件和与振动部件接触的转子，振动部件在弹性部件中产生行波 当将交替信号施加到机电能量转换元件时，将设置在振动部件的机电能量转换元件的表面上的电极膜分成多个具有不同半径的圆形区域， 圆形区域沿其周边方向分成多个电极。