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2011-01-01 16:21 |
找到參考資料了。 s&hP^tKT
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From Smith, Modern Lens Design, 2nd ED, page 4 U Bg_b?k
y=`(`|YW}`
Are aspheric surfaces free of aberration? n A j2k
q{(&:~M
The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have ,_-*/- 7;8
no spherical aberration if the object point is at one focal point and the _QCI < |A
image is at the other. But if we depart from this condition we definitely xz'd5 re%
do get spherical aberration. i)DXb
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