Vibration wave drive device, stator for a vibration wave motor, vibration wave motor, driving control system, optical apparatus, and manufacturing method of a vibration wave driving device

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United States of America Patent

PATENT NO 10038394
SERIAL NO

14890033

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Abstract

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A vibration wave drive device includes an annular piezoelectric element including a piezoelectric material and multiple electrodes provided sandwiching the piezoelectric material, the annular piezoelectric element being configured to vibrate by a traveling wave of a wavelength λ; and a power feeding member including at least an electric wire for supplying electric power to the element, the feeding member being provided at a first surface of the element. The element includes at least two driving regions, and a non-driving region arranged between two of the at least two driving regions and having an average annular length of nλ/4, n being an odd number. At least one electrode provided on the first surface is arranged across the driving region and the non-driving region, and is electrically connected to the feeding member only in the non-driving region.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujita, Satoshi Utsunomiya, JP 86 808
Furuta, Tatsuo Machida, JP 101 410
Ifuku, Toshihiro Yokohama, JP 69 622
Koyama, Shinya Tokyo, JP 46 229
Takeda, Kenichi Yokohama, JP 148 1679
Tanaka, Hidenori Yokohama, JP 116 520

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