找到參考資料了。 Uy)pEEu
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From Smith, Modern Lens Design, 2nd ED, page 4 x6Gl|e[jv
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Are aspheric surfaces free of aberration? wr,+9uK
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have (./Iq#@S
no spherical aberration if the object point is at one focal point and the pSYEC,0B
image is at the other. But if we depart from this condition we definitely 9}fez)m:g0
do get spherical aberration. Q4]Od{[