Patent ID: 7501723

Claim:
A driving device comprising: a slider formed of a soft magnetic material and having at least one spiral member disposed along a predetermined axial direction; a stator formed of a soft magnetic material; a first coil fixed to said stator, for at least partially magnetizing a first area of said spiral member; a second coil fixed to said stator, for at least partially magnetizing a second area of said spiral member; a first magnet fixed to said stator and having a magnetized surface thereof opposed to the first area and magnetized in a shape corresponding to a shape of said spiral member; and a second magnet fixed to said stator and having a magnetized surface thereof opposed to the second area and magnetized in a shape corresponding to the shape of said spiral member, wherein said slider is disposed inside said stator; wherein said first coil, said second coil, said first magnet and said second magnet are disposed coaxially with one another and parallel to the predetermined axial direction, and; wherein said stator is disposed at an outer peripheral side of each of said first and second coils and said first and second magnets.