之前回家了,好久没登了,这个我也不知道 73b(A|kQ@
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。 +K6j p
n]?KDID;
The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. 'G6g
yO/K
Buchdahl develops specific equations by which the higher-order contributions may be gLyXe,Jp
calculated. The equations for the fifth-order contributions are very complex and are usu- D%CKkQ<u2
ally calculated as part of a computer optical software package