Optical device actuator and lens barrel provided with same

An optical device actuator, comprising:

• a movable frame that includes a lens;
• a guide shaft configured to support the movable frame so as to be movable along an optical axis of the lens;
• a vibration application component configured to apply vibration to a side of a first end of the guide shaft;
• a first weight that is fixed to the vibration application component in an axial direction of the guide shaft;
• a first elastic element that is fixed to an end of the first weight on an opposite side from the vibration application component in the axial direction of the guide shaft and has an elasticity;
• a second weight that is fixed to the first weight in the axial direction of the guide shaft via the first elastic element;
• a first frame configured to support the vibration application component, the first weight, the first elastic element, and the second weight disposed on the side of the first end of the guide shaft;
• and
• an elastic member that is provided on the side of the first end of the guide shaft and is configured to press the vibration application component in the axial direction against the first end of the guide shaft via the first weight, the first elastic element, and the second weight.