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2011-01-01 16:21 |
找到參考資料了。 s.a @uR^
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From Smith, Modern Lens Design, 2nd ED, page 4 1B$8<NCQ=?
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Are aspheric surfaces free of aberration? -![{Zb@
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have VBW ] [f
no spherical aberration if the object point is at one focal point and the n^n QrRIp
image is at the other. But if we depart from this condition we definitely 5C9
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do get spherical aberration. 4L r,}t A
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