找到參考資料了。 R1$s1@3I|
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From Smith, Modern Lens Design, 2nd ED, page 4 ?wP/l
`=V p 0tPI
Are aspheric surfaces free of aberration? "%}24t%
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The conic aspherics (e.g., paraboloid, ellipsoid, hyperboloid, and the sphere) have t!-\:8n
no spherical aberration if the object point is at one focal point and the xv"v='
image is at the other. But if we depart from this condition we definitely gLm,;'h%u
do get spherical aberration. Al1_\vx7