| 摘要 |
The present invention relates to a driving body with a piezoelectric element and, more specifically, to a driving body with a piezoelectric element, the driving body driving a lens holder in a vertical direction using the piezoelectric element to transfer a lens. The driving body with the piezoelectric element of the present invention comprises a resonant unit in which first and second combination grooves are formed on one side to be separated from each other in a longitudinal direction, which is an optical axis direction of the lens; a first piezoelectric element which is combined to the first combination groove; a second piezoelectric element which is combined to the second combination groove and arranged apart from the first piezoelectric element; a first (+) electrode which is combined to the first piezoelectric element; and a second (+) electrode which is combined to the second piezoelectric element. An alternating voltage of an optimal frequency having a phase difference is applied to the first (+) electrode and second (+) electrode. The first and second piezoelectric elements are stretched in longitudinal and width directions of the resonant unit. The resonant unit moves the lens in the optical axis direction as a side unit performs an oval displacement motion. |
