| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens driving device by which a force that allows a piezoelectric element to be press-contacted with a vibrated transmission member can be adjusted by a simple operation.SOLUTION: A lens driving device is configured to drive a lens group by a vibrated transmission member disposed in contact with a substantially rectangular piezoelectric element as a driving source. The vibrated transmission member uses vibration of the piezoelectric element as a driving force and converts the driving force to a rotational motion, and then transmits the driving force converted to the rotational motion to the lens group. In the lens driving device, a protrusion-shaped output part is disposed at one end of the piezoelectric element, the output part is contacted with the vibrated transmission member, and a pressurization mechanism that presses the piezoelectric element against the vibrated transmission member is disposed at the other end of the piezoelectric element. The lens driving device includes pressing force variably adjusting means for adjusting pressing force applied by the pressurization mechanism. |
