Hello again, this time I used the merit function as a criterion for tolerancing. See the MF Editor below, it uses RMS wavefront with a rectangular sampling:

The value of the MF is the same given in the wavefront map (not true if I select PTV in the MF editor, it doesn’t change the MF value...). But for the mement lt’s say we use RMS wavefront:

Then, in the Tolerancing Menu, I select Merit Function as a criterion, I click on Check, and the value is different:

I hope someone can help me on this, because I am really struggling to have some physical values when doing tolerancing, for the moment I can’t trust the numbers I obtain.

Thanks!

I had 3 compensators in my tolerancing setup, one after each lens. I removed 2 of them, keeping only the last one. Now the RMS wavefront values criterion in the tolerancing tool matches the one computed in the merit function or the wavefront map. This is good, but I do not understand the reason why it didn’t work with the 3 compensators...

Hi ​@Julien Dejonghe. Compensators will be optimised before the nominal value is computed/reported, so this may be responsible for the differences in the values that your are seeing. If you want to directly compare the value from the tolerancing tool to the merit function for your nominal design then I suggest setting ‘Comp:’ to ‘None’ before clicking Check. You can then change Comp back to the required setting (e.g. Optimise All) before launching your tolerancing run.