找到參考資料了。 XORk!m|
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From Smith, Modern Lens Design, 2nd ED, page 4 ^aZAw%K
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Are aspheric surfaces free of aberration? eH%RNtP`
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have %A/_5;PZ/
no spherical aberration if the object point is at one focal point and the Q{g;J`Z)p
image is at the other. But if we depart from this condition we definitely h"+ `13
do get spherical aberration. 3AcD,,M>>