之前回家了,好久没登了,这个我也不知道 cz~Fz;)2{N
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。
{F+7> X
Jlj=FA`
The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. MN}@EQvW==
Buchdahl develops specific equations by which the higher-order contributions may be PmZ-H>
calculated. The equations for the fifth-order contributions are very complex and are usu- EC<g7_0F
ally calculated as part of a computer optical software package