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rotate the whole lens system

  • 9 February 2023
  • 2 replies
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Hi, 

I’m wondering is there any way to rotate the whole lens system 45deg around the optical axis in Zemax? I have a script that outputs the PSF only in x or y axis but I’d like to check the PSF along the diagonal direction. Thanks!

 

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Best answer by Andrey.Pravdivtsev 10 February 2023, 14:57

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Userlevel 6
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Hi,

Rather than rotate the entire lens, I would suggest using the Huygens PSF and place a single Coordinate Break right before the image plane and rotate this Coordinate Break (Tilt About Z = 45).  A FFT PSF is always measured in (Exit) Pupil Coordinates and the only way to rotate Pupil Coordinates is to rotate the whole system with several pairs of Coordinate Breaks. A Huygens PSF is always measured in Image Coordinates so a single Coordinate Break can rotate the PSF for you:

 

This will work really well for fields defined in a single axis and for rotationally symmetric systems.

Userlevel 3
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Maybe it will be simpler to add X and Y in the Field Editor? So you can get diagonal field,

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