找到參考資料了。 V5s&hZZYa
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From Smith, Modern Lens Design, 2nd ED, page 4 ,}7_[b)&V
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Are aspheric surfaces free of aberration? #"r kuDO
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have K%2I
no spherical aberration if the object point is at one focal point and the lU$X4JBzS
image is at the other. But if we depart from this condition we definitely )%#?3X^sI
do get spherical aberration. s=/^lOOO