找到參考資料了。 >!YI7)
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From Smith, Modern Lens Design, 2nd ED, page 4 Hw/1~O$T
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Are aspheric surfaces free of aberration? /T*]RO4%>]
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have m5LP~Gb
no spherical aberration if the object point is at one focal point and the _hLM\L
image is at the other. But if we depart from this condition we definitely ~c3CyOab
do get spherical aberration. ZD0Q<8%