找到參考資料了。 \I1+J9Gl
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From Smith, Modern Lens Design, 2nd ED, page 4 ^C^FxIA&
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Are aspheric surfaces free of aberration? R}>xpU1
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have k?3NF:Yy7
no spherical aberration if the object point is at one focal point and the $3zs?Fd`
image is at the other. But if we depart from this condition we definitely v#{Sx>lO
do get spherical aberration. w,> ceu/