Patent ID: 8044541

Claim:
A multi-degree-of-freedom actuator comprising: a movable element having a first permanent magnet and a second permanent magnet arranged in an X-direction; and a stator including a stator core and a plurality of coils, the plurality of coils comprising: an X-direction driving coil to relatively drive the movable element in the X-direction and having a first coil side and a second coil side opposite to the first coil side; and a first Z-direction driving coil and a second Z-direction driving coil to relatively drive the movable element in a Z-direction, each of the first and second Z-direction driving coils having an air core around which a wire is wound and provided such that the air core faces a magnet pole of each of the first and second permanent magnets, the first coil side being provided at the air core of the first Z-direction driving coil, the second coil side being provided at the air core of the second Z-direction driving coil.