Patent ID: 6151100
Filing Date: 2000-11-21
Classification: G03F

Abstract:
A positioning system, comprising:an X-Y table having a substrate holding surface for holding a substrate, said holding surface being movable in directions of X and Y axes, respectively, relative to a base table;a rotational table being rotationally movable about X and Y axes, respectively; andcontrol means for driving controlling said X-Y table and said rotational table, wherein said control means comprises means for storing, beforehand, information regarding rotation about the X or Y axis to be caused during motion of said X-Y table, wherein the information is produced in the form of a table or a function in relation to a movement amount of said X-Y table or to a movement amount and a movement direction of said X-Y table, and said control means corrects, beforehand, the rotation about the X or Y axis to be caused during motion of said X-Y table.