A camera lens drive mechanism includes a lens cylinder, and the lens
hollow is able to fit over a lens. A conductor coil is wound around an
outer surface of the lens cylinder, and a coil spring is surrounding the
lens hollow cylinder. A magnetic body is opposite to the conductor coil
for the magnetic line of force from the magnet can cut across the
conductor coil. An active force is induced on the coil when a current is
conducted in the conductor coil, and then the lens cylinder is pushed
also. The magnitude of the active force can be controlled by adjusting
the magnitude of the current in the conductor coil.