Patent ID: 7719779

Claim:
A lens driving device comprising: a holder that holds a lens; a supporting portion that supports the holder displaceably along an optical axis of the lens; at least one magnet that is arranged symmetrically with respect to the optical axis on a side surface of the holder; at least one coil that is arranged on the supporting portion so as to face toward the magnet; and at least one magnetic member that is arranged on the supporting portion so as to face toward the magnet in a direction vertical to the optical axis, wherein the supporting portion is provided with a guiding portion that guides the holder displaceably along the optical axis by restricting movement of the holder along the direction vertical to the optical axis, and the magnetic member is arranged so that magnetic force between the magnet and the magnetic member in an in-plane direction vertical to the optical axis is imbalanced, and a length of the magnetic member in the optical axis direction is longer than the length of the magnet in the optical axis direction, and covers a moving range of the magnet.