找到參考資料了。 ,oh;(|=
o{! :N> (
From Smith, Modern Lens Design, 2nd ED, page 4 &b`W<PAc?4
I8j:{*h
Are aspheric surfaces free of aberration? -F[@)$L
v&'#Gg
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have ~!5=o{wy
no spherical aberration if the object point is at one focal point and the @aZ Tx/
image is at the other. But if we depart from this condition we definitely (y 7X1Qc)
do get spherical aberration. ?h&?`WO(