找到參考資料了。 l/
;
~PahoRS
From Smith, Modern Lens Design, 2nd ED, page 4 {Wu$YWE*sx
2oRg 2R}
Are aspheric surfaces free of aberration? X<; f
,V:SN~P66+
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have R=
o2K
no spherical aberration if the object point is at one focal point and the ;H.^i|_/
image is at the other. But if we depart from this condition we definitely WPG(@zD
do get spherical aberration. YNj`W1