找到參考資料了。 \"@BZ.y
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From Smith, Modern Lens Design, 2nd ED, page 4 v-mhqhb
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Are aspheric surfaces free of aberration? 0(!D1G{ul
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have 'm,3znX!c
no spherical aberration if the object point is at one focal point and the ZkZTCb`/l
image is at the other. But if we depart from this condition we definitely \d#|n u
do get spherical aberration. {
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