找到參考資料了。 Ee|@l3)
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From Smith, Modern Lens Design, 2nd ED, page 4 Wt`D
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Are aspheric surfaces free of aberration? bkM$ Qo
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have I}q-J~s
no spherical aberration if the object point is at one focal point and the -
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image is at the other. But if we depart from this condition we definitely G{"1I
do get spherical aberration. y&CUT:M6