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2011-01-01 16:21 |
找到參考資料了。 e&;e<6l&{ VkFh(Br<{ From Smith, Modern Lens Design, 2nd ED, page 4 EL`|>/[J ;&&<zWq3h Are aspheric surfaces free of aberration? %`C*8fc& M5h
r0R{ The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have ?YW~7zG no spherical aberration if the object point is at one focal point and the :awkhx image is at the other. But if we depart from this condition we definitely K>DN6{hnV; do get spherical aberration. iSCkV2
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