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Question

surface form error

  • July 29, 2025
  • 3 replies
  • 123 views

Shivam

Hi 

I am trying to add surface form error individually on a lens and a flat window of λ/5 on both sides. Optical drawing doesn't mention the kind of aberration this surface form error brings. How do I perform this using zernike coefficients with the surface type of zernike standard sag?

 

3 replies

Sebastien G.

Hello,

there could be different ways to do that.

What is your goal ? Running a MonteCarlo to see how your system behaves ? Adding a random set of Zernike coefficients and work with it ?


Shivam
  • Author
  • Monochrome
  • August 3, 2025

I have to add λ/5 surface form error on flat window. I want to know how do I analyse and confirm if λ/5 surface error is added on the 1st and 2nd surface of my flat window after running either of the two. OPD mentions maximum scale in terms of waves and when I calculate the rms from the data points given in OPD plot, it doesn't matches with rms value given in Wavefront map. Let me know if I am doing any mistake in the basic understanding of the formulas. 

Thank you 


Sebastien G.
  • Infrared
  • August 19, 2025