找到參考資料了。 1y;zPJ<ntm
Y@Y(;C"SW
From Smith, Modern Lens Design, 2nd ED, page 4 I*2rS_i[T
[![(h %
Are aspheric surfaces free of aberration? "-:\-sMt{
ljON_*
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have v|2j~
no spherical aberration if the object point is at one focal point and the ,O!aRvzap
image is at the other. But if we depart from this condition we definitely =1[g`b
do get spherical aberration. +eXfT*=u5