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27 November 2017 Rapid evaluation of high-performance systems
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Proceedings Volume 10590, International Optical Design Conference 2017; 1059004 (2017)
Event: International Optical Design Conference - IODC 2017, 2017, Denver, United States
System assessment for design often involves averages, such as rms wavefront error, that are estimated by ray tracing through a sample of points within the pupil. Novel general-purpose sampling and weighting schemes are presented and it is also shown that optical design can benefit from tailored versions of these schemes. It turns out that the type of Gaussian quadrature that has long been recognized for efficiency in this domain requires about 40-50% more ray tracing to attain comparable accuracy to generic versions of the new schemes. Even greater efficiency gains can be won, however, by tailoring such sampling schemes to the optical context where azimuthal variation in the wavefront is generally weaker than the radial variation. These new schemes are special cases of what is known in the mathematical world as cubature. Our initial results also led to the consideration of simpler sampling configurations that approximate the newfound cubature schemes. We report on the practical application of a selection of such schemes and make observations that aid in the discovery of novel cubature schemes relevant to optical design of systems with circular pupils.
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G. W. Forbes and J. Ruoff "Rapid evaluation of high-performance systems", Proc. SPIE 10590, International Optical Design Conference 2017, 1059004 (27 November 2017);

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