找到參考資料了。 sS-W~u|C
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From Smith, Modern Lens Design, 2nd ED, page 4
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Are aspheric surfaces free of aberration? XpR.rq$]
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have aF,jJ}On
no spherical aberration if the object point is at one focal point and the ri#,ec|J
image is at the other. But if we depart from this condition we definitely ZyHIMo|
do get spherical aberration. f9vcf# 2