之前回家了,好久没登了,这个我也不知道 CoTe$C7
在modern lens design英文第一版中329页中有个注释提到了这个。看来是用来计算higher-order contributions的。 ~X<Ie9m1x
WLA LXJ7
The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. (GB*+@
Buchdahl develops specific equations by which the higher-order contributions may be -0:Equ?pz
calculated. The equations for the fifth-order contributions are very complex and are usu- (\*+HZ`(Uu
ally calculated as part of a computer optical software package