Patent ID: 7385670
Filing Date: 2008-06-10
Classification: G03F

Abstract:
1. A lithographic apparatus comprising: an illumination system constructed and arranged to condition a beam of radiation; a support structure constructed and arranged to support a patterning device, the patterning device configured to impart the beam of radiation with a pattern in its cross-section; a substrate table constructed and arranged to support a substrate; a projection system for projecting the patterned beam of radiation onto a target portion of the substrate; and a cleaning system constructed and arranged to clean a component in the lithographic apparatus in situ, said cleaning system being arranged to provide a cleaning environment in proximity of a predetermined position on the component to be cleaned, said cleaning system further being arranged to provide the cleaning environment substantially independent of a type of contamination present at the predetermined position, wherein said cleaning system comprises a heating system constructed and arranged to heat the component to be cleaned in the proximity of the predetermined position, or a snow system constructed and arranged to locally provide snow particles, to remove the contamination.