Patent ID: 7262926

Claim:
A lens barrel, comprising: a plurality of lens units to focus light coming from a subject onto an imaging element; an actuator to move at least a lens unit included in the plurality of lens units; and a housing member to support the plurality of lens units and the actuator; wherein the actuator includes: a vibrating device comprising two vibrating members, each of which includes a plurality of piezoelectric elements aligned in a line, so that the two vibrating members intersect each other at a predetermined angle and vibrate in response to high-frequency electric signals; a driven member, coupled to the lens unit, to be moved by vibrations generated by the vibrating device; and a supporting section that includes a roller rotatably fitted on a shaft disposed opposite to the vibrating device such that the vibrating device press-contacts the driven member while a pair of the vibrating device and the roller tightly clips the driven member between the vibrating device and the roller, and a straight line that links a center of the shaft to a contact point at which the vibrating device contacts the driven member, is substantially perpendicular to the driven member; and wherein the driven member is disposed at a side of the lens unit, while the vibrating device and the supporting member are disposed at a side of the housing member.