找到參考資料了。 $)|
l#'r
yI9~LTlA3
From Smith, Modern Lens Design, 2nd ED, page 4 s{q)m@
fShf4G_w\
Are aspheric surfaces free of aberration? ]d"4G7mu`l
hq9b
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have 2G"mm(
no spherical aberration if the object point is at one focal point and the ,x5`5mT3
image is at the other. But if we depart from this condition we definitely 4QWDuLu
do get spherical aberration. R7us9qM4e