Patent ID: 7982417

Claim:
A stage unit comprising: a stator that includes: a first coil array in which first coils extending in a first direction are arranged in a second direction perpendicular to the first direction; a second coil array in which second coils extending in the first direction are arranged in the second direction, the second coil array being located next to the first coil array in the first direction; and a third coil array in which third coils extending in the second direction are arranged in the first direction, the third coil array covering the first coil array and the second coil array; a movable member that includes a magnet located above the stator and a stage to which the magnet is attached; a controller that controls driving of the movable member by allowing a current amplifier to supply current to the coils extending in the first direction and allowing another current amplifier to supply current to the coils extending in the second direction; and a switch that is capable of connecting a first coil to a second coil.