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Proceedings Paper

Local optimization strategies to escape from poor local minima
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Paper Abstract

Three local optimization strategies to escape from a local minimum are discussed. The first strategy is to radically modify the error function. The old and new error function should both tend to zero for ideal systems but must differ sufficiently from another. The second strategy is to temporarily over-design the system, i.e. to make available for optimization more system parameters than a designer would normally use for the given aperture and field specifications. Finally, it is shown that, with a small enhancement of the local optimization algorithm, it is possible to move from one local minimum into a neighboring one by locating a saddle point between them.

Paper Details

Date Published: 23 December 2002
PDF: 8 pages
Proc. SPIE 4832, International Optical Design Conference 2002, (23 December 2002); doi: 10.1117/12.486470
Show Author Affiliations
Florian Bociort, Delft Univ. of Technology (Netherlands)
Alexander Serebriakov, Delft Univ. of Technology (Netherlands)
Joseph J. M. Braat, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 4832:
International Optical Design Conference 2002
Paul K. Manhart; Jose M. Sasian, Editor(s)

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