找到參考資料了。 ZMq6/G*fD
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From Smith, Modern Lens Design, 2nd ED, page 4 |vw"[7_aS
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Are aspheric surfaces free of aberration? Er{>p|n=
5D'\b}*lJ}
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have ctGL-kp
no spherical aberration if the object point is at one focal point and the ?F3h)(}
image is at the other. But if we depart from this condition we definitely #Q
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do get spherical aberration. jB(|";G