Allow me to repost here for depth/frequency setting ,pzCJ@5
The main fresnel lens types are: X3yr6J[ ^
Y[4B{
* Constant groove depth. <&iBR
* Contant groove pitch types. Gy%e%'
@35shLs
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. 4fswx@l
) /'s&
D
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. (P-<9y@
P_U-R%f
For conic: check conic section using Wikipedia and you should see what conic constant means. M-Bw9`#Jw
/jD'o>
ej+!|97M