Patent ID: 7352438
Filing Date: 2008-04-01
Classification: G03B,G03F

Abstract:
1. A lithographic apparatus comprising: a 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 projection system configured to project the patterned radiation beam onto a target portion of the substrate, a first holder to hold said patterning device on a first surface of said patterning device, the first surface being on a side of the patterning device comprising a patterning surface of the patterning device or the side opposite thereto; and a second holder to hold said patterning device on a second surface of said patterning device, opposite to said first surface, said second holder, in use, supporting said patterning device substantially only in directions parallel to the second surface of the patterning device.