Patent ID: 6252332
Filing Date: 2001-06-26
Classification: H02N

Abstract:
A vibration actuator comprising:a vibration element which vibrates with a first vibration mode and with a second vibration mode which is in a direction different from the first vibration mode; anda relative moving member which executes relative motion in accordance with the vibration of said vibration element,in the first vibration mode, vibration of said vibration element being made substantially along a direction coincident with the direction of the relative motion, and in the second vibration mode, vibration of said vibration element being made substantially along a direction perpendicular to the vibration direction in the first vibration mode, and a resonance frequency of said vibration element in the first vibration mode being higher than the resonance frequency of said vibration element in the second vibration mode so that said relative moving member is driven in a stable state.