之前回家了,好久没登了,这个我也不知道 q:vz?G
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。 4rI:1yGt@
1a<]$tZk
The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. oS~}TR:}
Buchdahl develops specific equations by which the higher-order contributions may be c]6V"Bo}A
calculated. The equations for the fifth-order contributions are very complex and are usu- 'Pf_5q
ally calculated as part of a computer optical software package