Patent ID: 8049804

Claim:
A lens driving device comprising: a lens holding frame for holding a lens; a guide shaft for guiding the lens holding frame in an optical axis direction; a lead screw which is rotated by a driving source; a nut which is engaged with the lead screw to transmit driving force of the driving source to the lens holding frame so that the lens holding frame is moved in the optical axis direction; and an urging member for urging the lens holding frame toward the nut so that the lens holding frame is put into contact with the nut, wherein the urging member is a coil spring, an inner diameter portion of the coil spring is insertionally fitted to the guide shaft, and mutual contact portions of the lens holding frame and the nut are so formed that when the lens holding frame and the nut are brought into contact with each other by the urging member, an urging force acts on the lens holding frame in the optical axis direction and in an orthogonal direction that orthogonally intersects the optical axis direction.