找到參考資料了。 gnYo/q=K
~iPXn1
From Smith, Modern Lens Design, 2nd ED, page 4 X|yVRQ?F`
+6x}yc:yd
Are aspheric surfaces free of aberration? G#~U\QlG-
3
}3C*w+
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have k7&
cc|y
no spherical aberration if the object point is at one focal point and the 7uf5w0]
image is at the other. But if we depart from this condition we definitely 4aKppj
do get spherical aberration. X3][C