之前回家了,好久没登了,这个我也不知道 ~s?y[yy6i
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。 BB/c5?V
1_xkGc-z<
The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. 7k#>$sY+
Buchdahl develops specific equations by which the higher-order contributions may be *!NW!,R
calculated. The equations for the fifth-order contributions are very complex and are usu- >_\]c-~<
ally calculated as part of a computer optical software package