Patent ID: 6853440

Claim:
A lithographic projection apparatus, comprising: a radiation system constructed and arranged to provide a bean of radiation; a support structure constructed and arranged to support a reflective patterning device, the patterning device including a pattern surface and constructed and arranged to pattern the beam of radiation according to a desired pattern; a substrate table to hold a substrate; and a projection system constructed and arranged to project the patterned beam onto a target portion of the substrate, wherein the support structure and the substrate table are movable with respect to each other in a first direction and during movement of the support structure and the substrate table with respect to each other a variation in a position of the pattern surface in a second direction perpendicular to the first direction is corrected by at least one of adjusting a position of the patterning device in the first direction, adjusting a position of the substrate in the first direction, rotating the substrate about an axis parallel to the second direction, and rotating the patterning device about the axis parallel to the second direction.