Patent ID: 9244363
Filing Date: 2016-01-26
CPC Classification: G03F

Claim Text:
1. An immersion lithography apparatus comprising: an optical assembly including an optical element, the optical assembly configured to project a beam onto a substrate through an immersion liquid; a containment member arranged to surround a path of the beam; a stage on which the substrate is held, the substrate on the stage being moved below a bottom surface of the containment member with the substrate being spaced from the bottom surface of the containment member; and an isolator having an actuator which limits vibrations of the optical assembly, wherein the containment member includes: a nozzle outlet via which water as the immersion liquid is released, a recovery channel via which the immersion liquid is recovered from a gap between the containment member and the substrate and/or the stage, a fluid channel via which water is released to the gap between the containment member and the substrate and/or the stage, the fluid channel being provided radially inward of the recovery channel, and a removal channel which is provided radially outward of the recovery channel.