Patent ID: 11867642
Assignee: CARL ZEISS SMT GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 22:
23. The method of claim 1, comprising:
selecting a second subset of the images of the mask having differently defocused positions according to information about a line width of used radiation and longitudinal chromatic aberration of a second projection exposure apparatus to be simulated, wherein the second subset of the images is different from the first subset of the images, and the longitudinal chromatic aberration of the second projection exposure apparatus is different from that of the first projection exposure apparatus; and
generating a second image that has information representing a simulated longitudinal chromatic aberration of the second projection exposure apparatus, wherein the second image is generated using an interpolation and/or weighting of the selected second subset of the images of the mask having differently defocused positions.