Patent ID: 7148950

Claim:
A lithographic apparatus, comprising: (a) an exposure system comprising: a radiation system configured to condition a beam of radiation; a support structure configured to support a patterning device that imparts a desired pattern to the beam of radiation; a substrate holder configured TO hold a first substrate; and a projection system that projects the patterned beam onto a target portion of the first substrate, the projection system comprising a projection controller configured to control the projection onto the target position of the first substrate; and an exposure system controller configured to move a movable part of the exposure system such that the patterned beam is movable relative to the first substrate; (b) a measurement system comprising: an optical measurement device that projects a measurement beam to measure a surface property or a target portion of a second substrate; a second substrate bolder configured to hold the second substrate; and a measurement system controller configured to move a movable part of the measurement system such that the measurement beam is movable relative to the second substrate; (c) a correction determination mechanism configured to generate a correction signal that at least partly corrects an error of a position of the exposure system movable part caused by a movement of the measurement system movable part or at least partly corrects an error of p position of the measurement system movable part caused by a movement of the exposure system movable part; and (d) a signal feeder configured to supply the correction signal into the exposure system controller and/or measurement system controller for at least partly correcting the position of the respective exposure system controller and/or measurement system controller.