找到參考資料了。 W*G<X.Hf
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From Smith, Modern Lens Design, 2nd ED, page 4 76SXJ9@x
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Are aspheric surfaces free of aberration? zm# ?W
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have n{jGOfc
no spherical aberration if the object point is at one focal point and the /_.|E]
image is at the other. But if we depart from this condition we definitely <ZW-QN4
do get spherical aberration. s#MPX3itK