Allow me to repost here for depth/frequency setting U,RIr8 G
The main fresnel lens types are: Z6K9E=%)c
SK;f#quUQ
* Constant groove depth. A
|NX"
* Contant groove pitch types. |g8
]WFc
[DGq{(O
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. b2U[W#
* fSa8CV
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. N%y%)MI 8
w V;y]'
For conic: check conic section using Wikipedia and you should see what conic constant means. `dEWP;#cp
FE M_7M
$N,9e