找到參考資料了。 j}d):3!
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From Smith, Modern Lens Design, 2nd ED, page 4 t- TUP>_
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Are aspheric surfaces free of aberration? k=mLcP
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have MgJ5FRQ
no spherical aberration if the object point is at one focal point and the ^#C+l
image is at the other. But if we depart from this condition we definitely po\jhfn
do get spherical aberration. ;Z`a[\i':