kimclps:使用說明書Chapter 2 page 26
n>i}O!agg The chief ray (or principal ray) from every field point will be iterated to pass
`/L D:R through the center (x=0, y=0) of the stop surface, unless you override this behavior
nZ8f}R!f: with chief ray aiming (this is only necessary in a few unusual sit ..
(2016-10-10 14:44)
UZb!tO2