Fresnel lense

hi,

my big problem is a fresnel lense creation.. on the usual way i can make the modell, but I'd like find a method to create a parametric modell...

example: if I change the radius of lense the modell automaticaly generate the slices of the fresnel lense

Fresnel lense:



pls help.. thanks


Edited by: norbre

You try to use equations?

Nucu

Could you set each arced section of the fresnel equal? Then just call out different radii as needed?