找到參考資料了。 .j4y0dh33
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From Smith, Modern Lens Design, 2nd ED, page 4 ;\pr05
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Are aspheric surfaces free of aberration? '\bokwsP
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have mP)bOAU
no spherical aberration if the object point is at one focal point and the a6Vfd&
image is at the other. But if we depart from this condition we definitely |4+'YgO
do get spherical aberration. 7Z>vQ f B