Stray Light Simulation With Advanced Monte Carlo Techniques
Abstract
The Monte Carlo approach to the solution of radiant energy transfer among surfaces of a system represents radiant energy flux statistically as rays which can be traced through the system according to a set of probability distribution functions. Although the ray representation of the radiant energy is similar to that of a photon characterization, it is treated in this method as merely a statistical representation. Previous computer programs of this type have experienced considerable problems in achieving attenuation prediction accuracy, with acceptable confidence, in a reasonable computer run time. Traditionally, problems have arisen in the areas of excessive computer time requirements, poor statistical convergence, biased results, and related problems. Advanced Monte Carlo variance reduction techniques were applied in the development of the GUERAP III program which have alleviated problems in this area. The techniques of raysplitting, expected value, and importance sampling have led to very significant reductions in the required GUERAP run times.
 Publication:

Straylight problems in optical systems
 Pub Date:
 September 1977
 DOI:
 10.1117/12.964599
 Bibcode:
 1977SPIE..107...80L
 Keywords:

 Computerized Simulation;
 Light Scattering;
 Monte Carlo Method;
 Optical Equipment;
 Ray Tracing;
 Angular Distribution;
 Beam Splitters;
 Bidirectional Reflectance;
 Computer Programs;
 Light Transmission;
 Spatial Distribution;
 Transmittance;
 Variance (Statistics);
 Wave Diffraction;
 Optics