找到參考資料了。 z_5rAlnwT.
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From Smith, Modern Lens Design, 2nd ED, page 4 BT
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Are aspheric surfaces free of aberration? =vB]*?;9
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have u&hDjE
no spherical aberration if the object point is at one focal point and the m^W*[^p
image is at the other. But if we depart from this condition we definitely R !:eYoQ
do get spherical aberration. Vu_7uSp,)