找到參考資料了。 Z9E[RD
)t0Y-),vA
From Smith, Modern Lens Design, 2nd ED, page 4 ;r B2Q H]
7%b?[}y4
Are aspheric surfaces free of aberration? XFUlV;ek
8rx?mX,}
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have 6X$]d^)h{
no spherical aberration if the object point is at one focal point and the q5p!Ty"
image is at the other. But if we depart from this condition we definitely ]O,;t>
do get spherical aberration. x9hkE!{8