Vibration actuator, lens barrel and camera

To provide a vibration actuator having good driving performance even when miniaturized, and a lens barrel and camera provided with the same. A first aspect of the present invention is to provide a vibration actuator comprising, an electromechanical conversion element, having a first joining face, an...

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Bibliographic Details
Main Author MORIOKE TOSHIKAZU
Format Patent
LanguageEnglish
Published 01.05.2012
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:To provide a vibration actuator having good driving performance even when miniaturized, and a lens barrel and camera provided with the same. A first aspect of the present invention is to provide a vibration actuator comprising, an electromechanical conversion element, having a first joining face, and which is subject to excitation, an elastic body having a second joining face which is joined to the first joining face, and a driving face which gives rise to vibration waves as a result of said excitation, and a relative moving member, having a contact face which is in pressure contact with the driving face, which is driven by the vibration waves, and which moves relative to the elastic body, wherein an outer shape of said first joining face has a shape which differs from an outer shape of said contact face.
Bibliography:Application Number: US20090369492