Hi Michael

Ah okay that makes sense, thanks for the help there!

This perhaps is more a Python issue here, but I was having trouble with how to best approach launching multiple IOpticalSystems. The multiprocessing module generally doesn’t favour inputting zemax objects as a variable into the function for pool (where initially I thought simply passing in an IOpticalSystems object would work), so it seems I still need to initialise the system and analysis within the function itself.

To my knowledge however, to effectively ‘import’ the ZOSAPI module (to make the application, to then make the IOpticalSystems object), I need to launch the PythonStandaloneApplication, like in the top 2 lines below. This then carries the issue with the licensing again.

#Used to load/import local variables
zos = PythonStandaloneApplication()
ZOSAPI = zos.ZOSAPI

#Creating a new IOpticalSystems class for analysis
TheApplication = zos.TheApplication
syst = TheApplication.CreateNewSystem(ZOSAPI.SystemType.Sequential)
TheAnalyses = syst.Analyses
analyses = TheAnalyses.New_Analysis(ZOSAPI.Analysis.AnalysisIDM.PhysicalOpticsPropagation)

I hope that makes sense, any help is much appreciated!