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An Entity of Type : prov:Entity, within Data Space : webisadb.webdatacommons.org associated with source dataset(s)

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  • x=(y 2 /r)/[1+{1???(K+1)(y/r)2}??? ]+A 4 y 4 +A 6 y 6 +A 8 y 8 +A 10 y 10 +A 12 y 12 Here r is a paraxial radius of curvature, K is a conical coefficient, and A4, A6, A8, A10 and A12 are the fourth, sixth, eighth, tenth and twelfth aspherical coefficients.
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