Patent ID: 7800733

Claim:
A method for setting up lithographic processing of a device, the method comprising: selecting a set of system parameters for an optical lithographic system having selectable system parameters; for each point of a set of points within a lens pupil of the optical lithographic system associated with the selected set of system parameters, obtaining a value of at least one optical parameter at a level of the device, wherein the at least one optical parameter comprises a property of a light ray projected towards the device from a point selected from the set of points and wherein the value of the at least one optical parameter is obtained by determining a polarization state of a light ray incident on the device; combining data comprising the obtained values linked with positions of the set of points with data comprising at least one mask used for optical lithographic processing of the device, thereby generating combined data; and evaluating, based on the combined data, a combination of the selected set of system parameters and the at least one mask.