发明申请
US20150146080A1 DRIVE APPARATUS OF VIBRATION-TYPE ACTUATOR, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS USING THE SAME 有权
振动式致动器,可互换镜头的驱动装置和使用其的图像拾取装置

  • 专利标题: DRIVE APPARATUS OF VIBRATION-TYPE ACTUATOR, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS USING THE SAME
  • 专利标题(中): 振动式致动器,可互换镜头的驱动装置和使用其的图像拾取装置
  • 申请号: US14552195
    申请日: 2014-11-24
  • 公开(公告)号: US20150146080A1
    公开(公告)日: 2015-05-28
  • 发明人: Hiromitsu Morita
  • 申请人: CANON KABUSHIKI KAISHA
  • 优先权: JP2013-244999 20131127; JP2014-227260 20141107
  • 主分类号: G02B7/04
  • IPC分类号: G02B7/04 H04N5/232 H02N2/06
DRIVE APPARATUS OF VIBRATION-TYPE ACTUATOR, INTERCHANGEABLE LENS, AND IMAGE PICKUP APPARATUS USING THE SAME
摘要:
When a vibration-type actuator is in a non-driving period, at least one of a voltage amplitude and a phase difference of an alternate signal applied to an electrode of a piezoelectric element is set to be equal to a minimum value or a maximum value of a dead zone in terms of the voltage amplitude or the phase difference.
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