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2011-01-01 16:21 |
找到參考資料了。 C8SNSeg {i?K~|
h From Smith, Modern Lens Design, 2nd ED, page 4 Yhdt8[ 2 35\0g& Are aspheric surfaces free of aberration? JIkmtZv N1t:i? q& The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have pfIvBU? no spherical aberration if the object point is at one focal point and the 4}b:..Ku image is at the other. But if we depart from this condition we definitely 1%{(?uz9 do get spherical aberration. v:ZD}Q_
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