找到參考資料了。 ~B\O{5W
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From Smith, Modern Lens Design, 2nd ED, page 4 tSVU,m
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Are aspheric surfaces free of aberration? ?
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have Vy 7 )_D
no spherical aberration if the object point is at one focal point and the F/ui(4
image is at the other. But if we depart from this condition we definitely PwnfXsR
do get spherical aberration. nSpOTQ