Allow me to repost here for depth/frequency setting {5|("0[F
The main fresnel lens types are: .4l/_4,s_
]P[%Mhg^
* Constant groove depth. *XWq?hi
* Contant groove pitch types. x#C@8Bxq=
KL'zXkS
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. ]h9!ei
[
nmjm<Bu
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. ggb|Ew
]8;n{ }X
For conic: check conic section using Wikipedia and you should see what conic constant means.
d^|0R
x&A vUJ
z}Jr^>