找到參考資料了。 <]I[|4J 7
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From Smith, Modern Lens Design, 2nd ED, page 4 (9q61zA
I=)Hb?qT~
Are aspheric surfaces free of aberration? C$`z23E
NyU~8?bp
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have /zZ$<mVG
no spherical aberration if the object point is at one focal point and the .um]1_= \
image is at the other. But if we depart from this condition we definitely \M^L'Mkj
do get spherical aberration. B6r~4=w_