找到參考資料了。 9Hc$G{[a
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From Smith, Modern Lens Design, 2nd ED, page 4 =gJb^
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Are aspheric surfaces free of aberration? S5G6Rj@W
iy 14mh\ ~
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have z#]Jv!~EPE
no spherical aberration if the object point is at one focal point and the ]8f ms(
image is at the other. But if we depart from this condition we definitely dv.(7Y7.x
do get spherical aberration. DsT>3