Patent ID: 8767171

Claim:
A lithographic apparatus comprising; a substrate table configured to hold a substrate; a projection system configured to project a patterned beam onto a radiation-sensitive target portion of the substrate; a liquid supply system configured to provide a liquid to a space between the substrate table and the projection system, the liquid supply system comprising a barrier member extending along at least a part of the boundary of the space and comprising an inlet to provide a liquid to the space, the liquid inlet not provided on the substrate table; an actuator to adjust the height, the tilt, or both height and tilt, of the barrier member relative to the substrate; and an outlet to receive liquid, the liquid outlet located radially outwardly, relative to an optical axis of the projection system during projection of the patterned beam, of the liquid inlet and of a periphery of the substrate when the substrate is held by the substrate table, wherein, during projection of the patterned beam, liquid flows outwardly from the liquid inlet into the liquid outlet.