Allow me to repost here for depth/frequency setting Ouc=4'$-
The main fresnel lens types are: T.HS.
0&E{[~Pv
* Constant groove depth. W]{mEB
* Contant groove pitch types. Gt{~u^<
j4$XAq~W
So if your depth is fixed you will define +ve value in the cell and to specify the "height" or "depth" of each groove feature. If the frequency of the groove is fixed then you use -ve value. Say putting down - 5 this implies that there are 5 grooves with a unit length. \74+ cN
/\"=egB9
For radius, this is the curvature of the base surface. If you define one such lens and chaneg the radius and you shall see what it means. A graphic tells lounder than words. _"6{Rb53v=
6":=p:PT.
For conic: check conic section using Wikipedia and you should see what conic constant means. );$_|]#
f8'D{OP"G
BFc=GiPnQ