找到參考資料了。 F&])P-
!3
t^`O{m<
From Smith, Modern Lens Design, 2nd ED, page 4 iP@ZM=&wz
|UP `B|
Are aspheric surfaces free of aberration? $|]" W=h
|_}2f
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have Kh(ZU^{n
no spherical aberration if the object point is at one focal point and the D,;\o7V
image is at the other. But if we depart from this condition we definitely !E,A7s
do get spherical aberration. mK[)mC
_8