Hi @icybird,

Hard to say for me. Are you able to share a minimum working example that demonstrate the issue with us? In your MC files, are TEZI implemented correctly? Could you try with a simpler TDE and check step by step? Perhaps with a single COMP and one tolerance, and maybe not a TEZI because those need a bit of caution to setup, to see if there’s anything wrong with your file? If you tried thickness COMP on surface 8, and tolerance TTHI on surface 3 does that work?

Take care,

David

Hello @icybird,

did you add just a single coordinate break in front of each lens or another one behind the lens. Usually it is necessary to add a second coordinate break with a pick up to return the system afterwards. If you want to tilt or rotate a lens e.g. it might look like the following routine …

coordinate break

   > lens surface(s)

coordinate break ( return first coordinate break with pick-up settings -1 )

Then use COMP or CPAR to tilt or rotate or any other kind of properties!

I hope this information was useful for you.

Kind regards,

Christian

Hi David,

Please see attached zip. I have tried to simplified the TDE (as you suggested with only TTHI 3 and COMP 8 but still cannot get the compensator kick in.

Could you try and let me know if got the same thing?

Thanks a lot.

Hi @icybird,

I’ve tried to run a tolerancing on your file and the compensators seems to be updated. Here’s the result of 100 run with RMS Spot Radius (DLS optimization):

I also checked the Best/Worst files and the compensators were modified accordingly. Can you confirm how you setup your tolerancing? For the result above, I’ve used the following:

If you were using Comp: Paraxial Focus, you should be aware of the following limitation (from the Help File):

If “Paraxial Focus” is selected, only the change in paraxial back focus error is considered as a compensator; all other compensa- tors are ignored.

I suspect it might be the issue because your last screenshot has a column Back Focus Change.

Take care,

David

Hi David,

Thank you so much for trying it out and the hint, very helpful!