找到參考資料了。 n W2[x;
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From Smith, Modern Lens Design, 2nd ED, page 4 32[ lsU>1
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Are aspheric surfaces free of aberration? ,DrE4")4
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have CBC0X}_`
no spherical aberration if the object point is at one focal point and the &Q7vY
image is at the other. But if we depart from this condition we definitely HorFQ?8
do get spherical aberration. M7R.?nk