之前回家了,好久没登了,这个我也不知道 5#iv[c
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。 Ib!`ChZ
&yYK%~}t[
The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. RJGf@am&
Buchdahl develops specific equations by which the higher-order contributions may be []u!piW
calculated. The equations for the fifth-order contributions are very complex and are usu- 2O4UytN
ally calculated as part of a computer optical software package