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2011-01-01 16:21 |
找到參考資料了。 Ve2{;`t
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From Smith, Modern Lens Design, 2nd ED, page 4 84vd~Cf 9
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Are aspheric surfaces free of aberration? {j=`
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have rtS' 90`
no spherical aberration if the object point is at one focal point and the Y {D%v
image is at the other. But if we depart from this condition we definitely 8[;vC$
do get spherical aberration. Fvf |m7
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