| over |
2011-01-01 16:21 |
找到參考資料了。 R Iy \u >
v548ysE)
From Smith, Modern Lens Design, 2nd ED, page 4 CY"i-e"q<Q
5~VosUp e7
Are aspheric surfaces free of aberration? z/|BH^Vw
3(_!`0#F%
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have !q /5yEJ>h
no spherical aberration if the object point is at one focal point and the 6].:.b\qQc
image is at the other. But if we depart from this condition we definitely @z,*K_AKr
do get spherical aberration. ! q6hC
|
|