找到參考資料了。 QE]@xLz
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From Smith, Modern Lens Design, 2nd ED, page 4 ET*A0rt
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Are aspheric surfaces free of aberration? 0
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have HG]ARgOB
no spherical aberration if the object point is at one focal point and the .EYL
image is at the other. But if we depart from this condition we definitely 9~p;iiKGG
do get spherical aberration. vE ]ge