Patent ID: 8102504

Claim:
A lithographic projection apparatus comprising: an illumination system that conditions a radiation beam; a support structure that holds a patterning device, the patterning device being capable of imparting the radiation beam with a pattern; a substrate table that holds a substrate; a projection system that projects the patterned radiation beam onto a target portion of the substrate; a liquid supply system that provides a liquid to a space between the projection system and the substrate, the liquid supply system comprising a liquid outlet and a member extending along at least part of the boundary of the space, wherein the member comprises a liquid inlet located on a surface of the member which faces the substrate, and wherein the liquid outlet is separate from the liquid inlet and adjacent each other on a same side of the projection system; a first chamber formed upstream of an inlet of the member, the first chamber being wider than a flow passage formed upstream of the first chamber, and a second chamber formed downstream of an outlet of the member, the second chamber being wider than a flow passage formed downstream of the second chamber.