@John.Hygelund 

I’m not sure if this is possible right away in the tolerance script. Have you tried using a ZPL macro or a ZOS-API script? In ZPL, you have the keyword TOLERANCE that will perform a tolerancing based on a TOP (settings) file and save the result in a text file.

When you do your tolerancing in the user interface of OpticStudio, there’s a button Save at the bottom left of the tolerancing window. This will generate the TOP file to use with TOLERANCE. The TOP file should be saved in the correct folder (<data>\Configs), which should be the default when you press the Save button.

Then you can use ZPL to make modifications to the LDE between two TOLERANCE. In pseudo-code you could do:

surface_to_change = 2
new_thickness_value = 1.23

# Tolerancing before changes
TOLERANCE settings.TOP, results_before.txt

# Changes to LDE
SURP surface_to_change, THIC, new_thickness_value

# Tolerancing after changes
TOLERANCE settings.TOP, results_after.txt

I hope this makes sense.

Take care,

David

Hi @David.Nguyen ,

Thank you for the thoughts and the quick reply.

Here is what I ended up doing.

I did a standard tolerance analysis with the alignment configuration and produced a set of Monte Carlo files.

Using the API, I opened each MC file and changed the LDE to represent the use conditions and recomputed the merit function.

This got me what I need for now, but I think your approach of using the ‘TOLERANCE” function in the API/ZPL would be needed to if I wanted the sensitivities in the use condition.

 Here is a plot showing the yields for each field. The yellow lines come from the red results after changing the object conditions.

Thanks again for your help.

-John

You could define the thickness to be a compensator in the tolerance script, then load a merit function with CTVA operand set to your desired thickness and optimize. Load the initial merit function again at the end of the tolerance script.

Hi @Sean Turner ,

Thanks for the idea. I considered that but I also needed to change the material and assumed the material can’t be set as a compensator...

Oh I don’t see a way to change material within the tolerance script. I’m glad the API route seems to work though!