Patent ID: RE43465

Claim:
A lens driving apparatus comprising: a substantially cylindrical yoke; a base to which the yoke is attached; a carrier having for carrying a lens; a coil provided on the carrier; and four magnets, wherein the carrier is moved in a direction of an optical axis of the lens by electromagnetic force generated by passing current through the coil, wherein the base is substantially square-shaped as viewed from a plane, wherein the yoke is placed at an inner position of the base, wherein the yoke has an outer peripheral wall and an inner peripheral wall spaced apart from each other, the inner peripheral wall being annularly shaped, wherein each of the magnets is placed between the outer peripheral wall and the inner peripheral wall, and at a position corresponding to a respective corner portion of the base, and wherein a space between the outer peripheral wall and the inner peripheral wall positioned at each of a plurality of side portions of the base is made narrower than a space between the outer peripheral wall and the inner peripheral wall positioned at each of the corner portions of the base.