Patent ID: 11886124
Assignee: ASML NETHERLANDS B.V.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method to improve a lithographic process for imaging a portion of a patterning device pattern onto a substrate using a lithographic apparatus comprising an illumination system and projection optics, the method comprising:
obtaining a simulation model that models projection of radiation by the projection optics toward the substrate, wherein the simulation model models anamorphic demagnification imparted to radiation by the projection optics;
performing, based on the model and by a hardware computer, an illumination and patterning device pattern co-optimization;
performing, based on results of the illumination and patterning device co-optimization, a patterning device pattern only optimization; and
configuring, based on results of the patterning device pattern only optimization, the portion of the patterning device pattern taking into account an anamorphic manufacturing rule or anamorphic manufacturing rule ratio.