Skip to main content

NSC modelling deformed mirror


Forum|alt.badge.img

Hi there,

I am thinking of modeling a specific deformation on a mirror in my set up to help develope a pass/fail criteria. I have an interferogram (Zygo image) but I cannot make it into a Zernike model (it is rectangular), I will have to estimate and approximate the shape of the mirror by the data given. Attached an example.

I can convert the profile cross-section (marked with red arrow) from fringes to microns, that should not be a problem.

My question is: what non sequential object would you recommend that I’ll use for the mirror?

Thanks!

Did this topic help you find an answer to your question?

2 replies

Kevin Scales
En-Lightened
Forum|alt.badge.img+1
  • En-Lightened
  • 185 replies
  • July 17, 2020

Hi Ornit,

The attached files are not that easy for me to read or understand. But if I were to take a stab at answering this, I think my best best would be to go ahead and use your sag data to create a Grid Sag Lens. They can be rectangular and can take an arbitrary shape on the back surface. A Grid Sag Lens 2 will also work, though it supports front and back surface effects, which is more than you need here.

Kevin


Forum|alt.badge.img
  • Author
  • Single Emitter
  • 1 reply
  • July 17, 2020

Thank you Kevin!

I will try Grid Sag Lens. 

Thanks

Ornit


Reply


Cookie policy

We use cookies to enhance and personalize your experience. If you accept you agree to our full cookie policy. Learn more about our cookies.

 
Cookie settings