找到參考資料了。 ?!
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From Smith, Modern Lens Design, 2nd ED, page 4 _t;VE06Xjs
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Are aspheric surfaces free of aberration? P "_}F
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have O9=H
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no spherical aberration if the object point is at one focal point and the OUk5c$M(
image is at the other. But if we depart from this condition we definitely [O+^eE6h
do get spherical aberration. ;ld~21#m