找到參考資料了。 ZZM;%i-B
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From Smith, Modern Lens Design, 2nd ED, page 4 .cm9&&"Z
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Are aspheric surfaces free of aberration? %6\L^RP
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have Q[Gs%/>
no spherical aberration if the object point is at one focal point and the cHC1l
image is at the other. But if we depart from this condition we definitely Y0yu,
do get spherical aberration. 3tW}a`z9
