Lens driving device comprising piezoelectric actuator and guiding members

摘要

A lens driving device comprises a lens barrel 110 having at least one lens therein and provided with a friction member 112, a housing 120 for housing the lens barrel therein, an actuator 130 having a piezoelectric body disposed at an edge of the housing to apply a driving force, the piezoelectric body having at least one output member provided at one side thereof to be in contact with the friction member 112, a preload member 140 disposed between the edge of the housing and the actuator to apply an elastic force toward the lens barrel and a guiding part 150 disposed between the housing and the lens barrel to guide the lens barrel to move in an optical axis direction.