找到參考資料了。 qL/4mM0
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From Smith, Modern Lens Design, 2nd ED, page 4 K?+iu|$&
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Are aspheric surfaces free of aberration? OlL
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have s2FJ^4
no spherical aberration if the object point is at one focal point and the \DI%/(?
image is at the other. But if we depart from this condition we definitely bS=aFl#
do get spherical aberration. JS]6jUB<B