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Question

Total Integrated scatter error

  • June 22, 2026
  • 1 reply
  • 24 views

Utkarsha

Hi
I am trying to analyze scatter contribution in my imaging system for off axis mirrors using different surface roughness. For example I have calculated the A, B & g values for 10nm surface roughness and used those values to create an ABg file in the ABg scatter catalog,the TIS calculator showed 0.0058030 (The value is less than 1%).
While trying to assign this created ABg file to the mirror the following error on Total integrated scatter pops up.
Can anyone help me in understanding this error pops up  when my calculated TIS is less than 1% ?

 

1 reply

Chris Normanshire
Zemax Staff
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Hello,

I suspect the issue could be to do with wavelength scaling of the ABg data. In the Scatter Catalogue window you have specified the wavelength as 1.65e3 microns. If you use a different wavelength for ray tracing then the ABg data will be scaled as described in the Help ABg Scatter Data Catalogs.
 

I’d recommend checking the wavelength in the Scatter Catalogue window is correct.

Chris