找到參考資料了。 &.}zZ/
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From Smith, Modern Lens Design, 2nd ED, page 4
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Are aspheric surfaces free of aberration? kO4C^pl"v
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have |oM6(px
no spherical aberration if the object point is at one focal point and the L]VK9qB
image is at the other. But if we depart from this condition we definitely 4 (yHD
do get spherical aberration. 1~*_H_Q't