找到參考資料了。 AZH=r S`
S x0QPX
From Smith, Modern Lens Design, 2nd ED, page 4 dd-`/A@
bu:%"l
Are aspheric surfaces free of aberration? Hx?OCGj=S*
I]iTD
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have `^mY*Cb e
no spherical aberration if the object point is at one focal point and the ))xP]Mu v
image is at the other. But if we depart from this condition we definitely #a+*u?jnnL
do get spherical aberration. &YOks.k