Patent ID: 6509951
Filing Date: 2003-01-21
Classification: G03F,H02K

Abstract:
A lithographic projection apparatus for imaging of a mask pattern in a mask onto a substrate, said apparatus comprising:an illumination system constructed and arranged to supply a projection beam of radiation; a mask table provided with a mask holder constructed to hold a mask; a substrate table provided with a substrate holder constructed to hold a substrate; a projection system constructed and arranged to image a portion of the mask that is to be irradiated by the projection beam onto a target portion of the substrate; a heat shield arranged such that a first part of said apparatus is shielded by said heat shield from a second part, said first part being at a desired temperature, and said second part having a characteristic that influences said temperature of said first part; and a heat shield temperature controller constructed and arranged to control a temperature of said heat shield to said desired temperature, wherein said heat shield at least partly surrounds said second part.