Hi Hooman!

Have you tried using the Biconic Zernike surface type? It's like the Biconic, but with the addition of being able to define some asphere terms along X and Y (as well as defining some Zernike polynomial terms). The sag equation for the Biconic Zernike is as follows:



This can allow you to create some anamorphic surfaces which differ only in their asphere coefficients along X and Y, like below:



For your reference, I've also attached this sample file. Please let us know how this suits you!

- Angel

Hi Angel,

Thank you for your help.  This Biconic Zernike surface is what I was looking for.

Best,
Hooman

Hi,

In addition to the aspheric terms, how can different X radius and Y radius be defined?

Best,

Feli

Hi Feli

The Biconic Zernike surface contains a radius of curvature for X and a radius of curvature for Y.

Sandrine