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2011-01-01 16:21 |
找到參考資料了。 Fhf<T `
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From Smith, Modern Lens Design, 2nd ED, page 4 ?C-Towo=i
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Are aspheric surfaces free of aberration? ]?+{aS-]?k
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have u]*0;-tz
no spherical aberration if the object point is at one focal point and the UL$}{2N,_
image is at the other. But if we depart from this condition we definitely # xh_
do get spherical aberration. Yk!/ow@.
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