Patent ID: 8488101
Filing Date: 2013-07-16
Classification: G03B,G03F

Abstract:
1. A lithographic apparatus comprising: a substrate table which holds a substrate; a projection optical system which projects a patterned beam of radiation onto the substrate held by the substrate table; a liquid supply member which supplies a liquid to a space between the projection optical system and the substrate held by the substrate table; a liquid detector which detects a liquid remaining on a surface of the substrate while the substrate is held by the substrate table; and a controller that controls the liquid detector to detect the liquid remaining on the surface of the substrate after the substrate has been exposed by the patterned beam at the exposure position and before the exposed substrate is unloaded from the substrate table at an unload position, wherein the substrate held by the substrate table passes a detection area of the liquid detector on a way from the exposure position to the unload position.