Patent ID: 7804224

Claim:
A piezoelectric motor, comprising: a plurality of piezoelectric units, respectively in contact with a driven target, disposed separately from each other, and configured to drive the driven target; and a magnet configured to apply a preload force to each of the plurality of piezoelectric units by magnetically attracting the driven target in the absence of direct contact with the driven target, wherein the piezoelectric units drive the driven target in two-degree-of-freedom directions, wherein each of the plurality of piezoelectric units comprises: first and second piezoelectric elements having oscillation directions diagonally intersecting with a driving direction of the driven target, respectively; and a drive part contacting the driven target, coupling with the first and second piezoelectric elements, and driving the driven target in a plane perpendicular to a driving plane of the driven target by synthesized oscillations of the first and second piezoelectric elements.