Patent ID: 6538348
Filing Date: 2003-03-25
Classification: G03F

Abstract:
A stage device which moves a stage on a support by thrusts generated by a pair of thrust generating means being in parallel to a stage traveling direction, whereinthere is provided with a control section for moving the stage in a state that moments acted on the stage about the centroid are balanced by the thrust supplied from each of the pair of thrust generating means, wherein the control section calculates a thrust Fa of the thrust generating means on a distance La side and a thrust Fb of the thrust generating means on a distance Lb side by equations: Fa=FÃ—Lb/(La+Lb) Fb=FÃ—La/(La+Lb) where F is a thrust required to move the stage and La and Lb are distances from the centroid position of the stage to positions where the respective thrusts of the pair of thrust generating means act.