之前回家了,好久没登了,这个我也不知道 <2SWfH1>
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。 RuGG3"|
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The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. +^DDWVp
Buchdahl develops specific equations by which the higher-order contributions may be f.Y [2b
calculated. The equations for the fifth-order contributions are very complex and are usu- 4:9N]1JCb
ally calculated as part of a computer optical software package