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Including a custom (asymmetric) angle dependent interface

  • 19 January 2023
  • 2 replies
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For our application, we are simulating a camera that has pixels with an asymmetric angular response. We are wondering the best way to include it and calculate the PSF of the system.

  • This could be done with a flat, zero-thickness layer near the image plane
  • The angular response means it changes the amplitude of the ray depending on the position and the incidence angle (so it depends on Hx, Hy, Px and Py )
  • The angular response is custom and not radially symmetric.

We tried to include it has a custom coating, but since the angular response is not symmetric with respect to the optical axis, it does not work great.

 

Is there a way to include it using OpticsStudio Standard?

Would it be possible to implement it with DLLs? Or is there another “programming” option?

 

Many thanks

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Best answer by Mark.Nicholson 19 January 2023, 19:02

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This is in sequential mode, yes?

I’d look at writing a user-defined surface that modifies the transmission of the ray based on its position and angle. You may need to upgrade to Professional for the programming options, I don’t recall. There are a bunch of sample files called US_FILTxx. You might strike it lucky and fine one that does what you need, but it should be relatively easy to modify whichever sample is closest to your precise needs.

  • Mark

Thank you, I’ll have a look at those files.

Yes, it is for sequential mode.

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