Patent ID: 11860546
Assignee: ASML NETHERLANDS B.V.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A fluid handling structure configured to confine immersion fluid to a region of a lithographic apparatus, the fluid handling structure comprising:
an aperture formed therein for the passage there through of a projection beam through the immersion fluid;
a first part; and
a second part having a plurality of openings configured to provide a fluid flow into or out of the region,
wherein relative movement between the first part and the second part is effective to cause one or more openings of the plurality of openings to provide the fluid flow and cause one or more other openings of the plurality of openings to effectively discontinue to provide the fluid flow, so as to change a position of the fluid flow into or out of the second part relative to the aperture.