Patent ID: 7567339

Claim:
A lithographic apparatus configured to transfer a pattern onto a substrate, comprising: a support structure constructed to hold a patterning device, the patterning device configured to provide the pattern; a substrate table constructed to hold the substrate; a track comprising a plurality of gas outflow openings positioned along the track; a gas conduit configured to feed pressurized gas to the gas outflow openings to form a gas bearing configured to movably bear an object along the track; and a gas flow device configured to cause or prevent flow of gas through one or more of the gas outflow openings dependent on a position of a guide surface of the object with respect to the gas outflow openings, wherein a flow of gas is caused through at least one of the gas outflow openings when the at least one of the gas outflow openings lies opposite the guide surface of the object, and a flow of gas is prevented through the remaining ones of the gas outflow openings.