A lens drive device includes a lens movable body provided with a lens and
a drive mechanism for moving the lens movable body from a home position
in an optical axis direction of the lens. The drive mechanism includes a
magnet and a plurality of coils which is disposed so that the magnet is
interposed in the optical axis direction of the lens. An electric current
is supplied to the plurality of the coils in a reverse direction to a
direction of an electric current, which is supplied to the plurality of
the coils for moving the lens movable body, for restricting movement from
the home position of the lens movable body. Therefore, swinging and
rattling are hard to occur in the lens movable body and thus its impact
resistance can be enhanced.