找到參考資料了。 /}PF\j9#4
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From Smith, Modern Lens Design, 2nd ED, page 4 t: IN,Kl4
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Are aspheric surfaces free of aberration? |R56ho5C
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have 3q'&j,,^
no spherical aberration if the object point is at one focal point and the @~#Ym1{W
image is at the other. But if we depart from this condition we definitely B7]C]=${m
do get spherical aberration. }yJ$SR]t