找到參考資料了。 pB:XNkxL
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From Smith, Modern Lens Design, 2nd ED, page 4 `Abd=1nH
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Are aspheric surfaces free of aberration? 9G[
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have m.+h@
no spherical aberration if the object point is at one focal point and the $UzSPhv[
image is at the other. But if we depart from this condition we definitely Z=&|__+d
do get spherical aberration. ^os_j39N9