Hello,

I am currently exploring different ways to create manufacturable lenses (circular, rectangular, plano-convex/concave) using different surfaces. I am wondering what the “most efficient” surface is to use to create these types of basic lenses? I created a plano-convex lens using the extended polynomial surface using 30 terms and am playing around with more and less terms to see the effects. Is there a rule of thumb for the coefficients of the polynomials that they should be some order of magnitude so the lens is realistically manufacturable?

Thanks in advance for any advise.

**Best answer by Mark.Nicholson**