LENS DRIVING DEVICE

PROBLEM TO BE SOLVED: To provide a lens driving device which is small-sized and lightweight. SOLUTION: The device is equipped with a front lens 2, a front support frame 3 which supports the front lens 2, a front coil which is fitted behind the front support frame 3, a front metal piece 21 which is fitted on the inner circumferential surface of the front coil 4, a front spring 5 which is fitted behind the outer circumferential part of the front support frame 3, a rear lens 6, a rear support frame 7 which supports the rear lens 6, a rear metal piece 22 which is fitted on the outer circumferential surface of the rear coil 8, a rear spring 9 which is fitted behind the inner circumferential part of the rear support frame 7, a magnet 10, a front bearing 23 which is fitted on the outer circumferential surface of the magnet 10, a rear bearing 24 which is fitted on the inner circumferential surface of the magnet 10, and a yoke 11; and the front coil 4 is arranged in the outside gap between the magnet 10 and yoke 11 and the rear coil 8 is arrange din the internal gap between the magnet 10 and yoke 11. Then a current is applied to the front coil 4 to move the front lens 2 forward and applied to the rear coil 8 to move the rear lens 6 forward.