找到參考資料了。 W=
NX$=il
=55)|$hgD
From Smith, Modern Lens Design, 2nd ED, page 4 w +UBXW
0* x?rO?
Are aspheric surfaces free of aberration? JUw|nUnl?
H$?MPA-c
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have x3'ANw6E
no spherical aberration if the object point is at one focal point and the o!h::j0,~
image is at the other. But if we depart from this condition we definitely RQ|K?^k
v
do get spherical aberration. U!+O+(