Circle spacing at the wavefront

  • 2 March 2022
  • 1 reply

Good afternoon, dear colleagues.


I’m working with optical testing of the convex aspheric mirror. In the interferogram simulation I’ve got stripes like it is shown at the picture. There is a strange white circle at the edge of interference pattern. On the Optical Path figure you can see something like a break of the plot. Is it possible to fix this wavefront break?

I use Binary 2 surface to model diffractive optical element (corrector of spherical aberration). Perhaps, it’s an approximation error of the wavefront, because this surface use polynomials to set a phase shift.


Thank you for the future answers! 


Best answer by Mark.Nicholson 3 March 2022, 18:39

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Those rays are not tracing, for an as-yet unknown reason. Try looking at the layout plots with lots of rays traced, to see what’s happening, or do a single ray trace with the coordinates of the missing rays to see what’s happening