找到參考資料了。 6NzBpur 2H
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From Smith, Modern Lens Design, 2nd ED, page 4 G l_\Vy
B>sCP"/uV
Are aspheric surfaces free of aberration? %
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have sw [oQ!f
no spherical aberration if the object point is at one focal point and the H_Iim[v#
image is at the other. But if we depart from this condition we definitely UlnyTz~
do get spherical aberration. KUF$h Er