找到參考資料了。 2mLUdx~c
$"1pws?d
From Smith, Modern Lens Design, 2nd ED, page 4 yI:r7=KO
$Br>KJ%'g
Are aspheric surfaces free of aberration? 2b!j.T#u
,N0uR@GN
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have +0U#.|?
no spherical aberration if the object point is at one focal point and the F1\`l{B,\
image is at the other. But if we depart from this condition we definitely O*ImLR)i+s
do get spherical aberration. 3~:0?Zuq