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2011-01-01 16:21 |
找到參考資料了。 =!U{vT
K_]LK
From Smith, Modern Lens Design, 2nd ED, page 4 3(^9K2.s}
kt [#@M!}
Are aspheric surfaces free of aberration? QV{N q=%]
b44H2A .
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have o"Ef>5N
no spherical aberration if the object point is at one focal point and the kG?tgO?*
image is at the other. But if we depart from this condition we definitely
*}ay
do get spherical aberration. m\1*/6oV
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