Abstract
Automatic lens design by nonexperts is practical with the 1962 LASL lens-designing code, a general-purpose iterative program for evaluating and designing optical lens and mirror systems with surfaces generated by conic sections. Using skew ray traces, it analyzes lens performance statistically, finds differences resulting from design-parameter alterations, and computes a linear combination which will1, improve performance. Program characteristics, lens parameters, ray sampling, image evaluation, lens-performance weights, merit calculation, and parameter interactions are briefly described. Sample calculations are given in detail for a Lister-type lens and in summary for a special-purpose zoom lens.

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