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2011-01-01 16:21 |
找到參考資料了。 qh W]Wd" g
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From Smith, Modern Lens Design, 2nd ED, page 4 ]}Ys4(}
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Are aspheric surfaces free of aberration? A
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have mc`Z;D/mt
no spherical aberration if the object point is at one focal point and the % u VTf
image is at the other. But if we depart from this condition we definitely J:'_S `J
do get spherical aberration. bL WY Tj
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