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2011-01-01 16:21 |
找到參考資料了。 nxhlTf>3
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From Smith, Modern Lens Design, 2nd ED, page 4 &1<[@:;
s i2@k
Are aspheric surfaces free of aberration? 'i$. _Tx
V/H+9+B7Im
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have p lPPf+\
no spherical aberration if the object point is at one focal point and the ZMlBd}H
image is at the other. But if we depart from this condition we definitely 8<}=f4vUj5
do get spherical aberration. ^cNuEF9
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