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Design Optimization Using Generalized Simulated Annealing

An alternative to Damped Least Squares (DLS) optimization of lens systems is described that involves Generalized Simulated Annealing (GSA) techniques in conjunction with DLS. The resultant method can often overcome local minima and boundary value problems associated with optimizations conducted with DLS methods exclusively. The process is particularly useful during the intermediate design stages. As a result fewer demands are made on the designer to intervene in the optimization of a system to a given stage and better quality designs can be produced by less skilled designers. Searches for improvements to existing designs can be automated.