找到參考資料了。 6`LC(Nv%-n
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From Smith, Modern Lens Design, 2nd ED, page 4 u*R9x3&/5
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Are aspheric surfaces free of aberration? ?H9F"B$a
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have ZB-+bY
no spherical aberration if the object point is at one focal point and the 2i);2>HLG
image is at the other. But if we depart from this condition we definitely g*9jPwdG
do get spherical aberration. QC:/xP