LENS DRIVING DEVICE

PROBLEM TO BE SOLVED: To provide a lens driving device capable of ensuring driving force in a driving mechanism, while decreasing weight.SOLUTION: A lens driving device 1 includes: a lens holder 7; a driving mechanism 9 for giving driving force to the lens holder so as to move the lens holder 7 in an optical axis direction of a lens; and a housing for storing the lens holder 7 and the driving mechanism 9. The driving mechanism 9 includes: a coil 30 disposed so as to surround the lens holder 7; a plastic magnet 32 disposed at a corner portion of the housing; and a yoke 34 having an outside yoke portion 34a for surrounding an outside surface of the plastic magnet 32, and an inside yoke portion 34b disposed at a position corresponding to the corner portion of the housing and disposed oppositely to the inside surface of the plastic magnet 32.