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2011-01-01 16:21 |
找到參考資料了。 pu=T
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From Smith, Modern Lens Design, 2nd ED, page 4 %\_I%
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Are aspheric surfaces free of aberration? t!c8 c^HR
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have k^Tu9}[W1
no spherical aberration if the object point is at one focal point and the a[\,K 4l
image is at the other. But if we depart from this condition we definitely 8H./@~_ =
do get spherical aberration. Fly@"W4a
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