Hi Jose,

the discrepancy you are having is because when tolerancing, if the selected criterion is 'RMS Wavefront' the default algorithm to trace rays is the Gaussian Quadrature technique, whereas the Wavefront Map uses a grid to sample the pupil.

You can find a description of this algorithm browsing the help files as such:

The Optimize Tab (sequential ui mode) > Automatic Optimization Group > Optimization Wizard > Pupil Integration Settings > Gaussian Quadrature

This algorithm doesn't account for the effect of vignetting, and therefore, if there are surface apertures in the optical system that vignette enough rays to alter the effective shape of the pupil significantly, GQ should not be used:

What you can do is build a merit function using Rectangular Array algorithm for Pupil Integration:

The Optimize Tab (sequential ui mode) > Automatic Optimization Group > Optimization Wizard > Pupil Integration Settings > Rectangular Array

And then use the Merit Function as your criterion when Tolerancing:

This should give you similar results:

Note that in your MC file, if you use the 'RMS vs Field' tool with 'Gaussian Quadrature' method, the results match the ones obtained in the Tolerancing Summary tab:

Best,

Berta

Hi Berta,

Thank you very much for your help! That solved my issue:

Best regards,

José