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2011-01-01 16:21 |
找到參考資料了。 U7$WiPTNL9 ;iYff N From Smith, Modern Lens Design, 2nd ED, page 4 0S/'
94%w L1m{]>{- Are aspheric surfaces free of aberration? w!^~<{Kz 77 r(*.O| The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have zU5Hb2a no spherical aberration if the object point is at one focal point and the (K..k-o`. image is at the other. But if we depart from this condition we definitely vXj < do get spherical aberration. L5fuM]G`
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