| 摘要 |
A vibration actuator includes a substantially rod-shape vibration member, and an electro-mechanical energy conversion element for vibrating the vibration member. The vibration member is vibrated by mechanical energy from the conversion element, thereby moving a member contacting the vibration member, and the vibration member relative to each other. A first notch which is notched in the radial direction and a second notch which is notched in the axial direction to be contiguous with the first notch are formed in the vibration member.
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