找到參考資料了。 7!,YNy%
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From Smith, Modern Lens Design, 2nd ED, page 4 f4-a?bp
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Are aspheric surfaces free of aberration? p.}Ls)I
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have e^4 p%
no spherical aberration if the object point is at one focal point and the LMi:%i%\
image is at the other. But if we depart from this condition we definitely M.-"U+#aD
do get spherical aberration. 5uq3\a