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

Claim 14:
15. 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 therethrough of a projection beam through the immersion fluid;
a first part comprising a first opening; and
a second part having a second opening configured to provide a fluid flow into or out of the region,
wherein the first opening is located above the second opening and relative movement between the first part and the second part is effective to cause relative movement between the first and second openings such that the fluid flow can pass through at least partially aligned first and second openings, so as to change a position of the fluid flow into or out of the second part relative to the aperture.