| hhao100 |
2014-09-10 09:48 |
之前回家了,好久没登了,这个我也不知道 7i'clB9! 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。 >n(dyU @ tF 7u- The fifth, seventh, etc., orders may also be computed from paraxial raytrace data. SGba6b31 Buchdahl develops specific equations by which the higher-order contributions may be p#-=mXE/2 calculated. The equations for the fifth-order contributions are very complex and are usu- S3$C#mHX ally calculated as part of a computer optical software package
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