找到參考資料了。 ++0)KSvw
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From Smith, Modern Lens Design, 2nd ED, page 4 #oUNF0L@6
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Are aspheric surfaces free of aberration? %Y^J''
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have AYts
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no spherical aberration if the object point is at one focal point and the J+6zV m
image is at the other. But if we depart from this condition we definitely Rr)+M3'
do get spherical aberration. *3GV9'-P