Patent ID: 11892776
Assignee: ASML NETHERLANDS B.V.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A projection system for incorporation within a lithographic apparatus configured to project, via a radiation beam, a pattern of a patterning device onto a substrate, wherein the patterning device is configured to shape the radiation beam in accordance with the pattern, the projection system comprising:
a filter configured to:
suppress a zeroth order portion of a shaped radiation beam, and
suppress interference between certain first order portions of the shaped radiation beam,

wherein at least an unsuppressed first order portion of the shaped radiation beam is directed towards a substrate to form an image on the substrate, and
wherein the projection system is configured to perform 2D interferometric printing by optical interference using the one or more two-dimensional (2D) features.