Title:
振動型アクチュエータの駆動装置、フォーカスレンズ駆動装置、及び撮像装置
Document Type and Number:
Japanese Patent JP6961663
Kind Code:
B2
Abstract:
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.
Inventors:
Morita Hiromitsu
Application Number:
JP2019210871A
Publication Date:
November 05, 2021
Filing Date:
November 21, 2019
Export Citation:
Assignee:
Canon Inc
International Classes:
H02N2/06
Domestic Patent References:
| JP3261385A | ||||
| JP2001078472A | ||||
| JP2004056951A | ||||
| JP2002155968A | ||||
| JP2009089586A | ||||
| JP2011259559A |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa