Patent ID: 7869001

Claim:
A lithographic apparatus comprising: an illumination system configured to condition a radiation beam; a patterning support constructed to support a patterning device, the patterning device being capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam; a substrate support constructed to hold a substrate; and a projection system configured to project the patterned radiation beam onto a target portion of the substrate, wherein at least one of the patterning support or the substrate support are coupled to an eddy current damper, the eddy current damper comprising, an electrically conducting body having a face; and an array of magnets extending over the face, each magnet configured to generate a magnetic field directed essentially transversely to the face, the array of magnets configured to generate oppositely directed magnetic fields each having a field width, wherein at least one of the magnetic fields generated by the magnets has a field width that is smaller than a field width of an adjacent magnetic field, and wherein the field width that is smaller than the field width of the adjacent magnetic field is located anywhere other than an end of the array of magnets.