7 September 2006 Improved Mie theory scatter model for particulate contamination that conserves energy and obeys reciprocity
Author Affiliations +
Abstract
Particulate contamination scatter is often modeled using Bidirectional Scatter Distribution Functions (BSDFs) based upon Mie scattering by a distribution of spherical particles. Starting with the basic model described in P. R. Spyak and W. L. Wolfe [1,2,3,4], we improve upon it by adding multiplicative geometrical form factors. These factors prevent the Total Integrated Scatter (TIS) from exceeding unity and ensure that reciprocity is always obeyed. Preventing the TIS from exceeding unity is necessary for energy to be conserved in the raytrace, and obeying reciprocity is necessary to obtain consistent results between forward and backwards raytraces. As will be shown, this improved model fits measured data better than the previous model.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David G. Jenkins, Eric C. Fest, Rex M. Kremer, Paul R. Spyak, "Improved Mie theory scatter model for particulate contamination that conserves energy and obeys reciprocity", Proc. SPIE 6291, Optical Systems Degradation, Contamination, and Stray Light: Effects, Measurements, and Control II, 62910Q (7 September 2006); doi: 10.1117/12.681173; https://doi.org/10.1117/12.681173
PROCEEDINGS
8 PAGES


SHARE
KEYWORDS
Particles

Data modeling

Mirrors

Contamination

Atmospheric modeling

Mie scattering

Backscatter

RELATED CONTENT

Deterministic sequential stray light analysis
Proceedings of SPIE (September 07 2010)
The Use Of A Simplified Model For Particulate Scatter
Proceedings of SPIE (January 02 1990)
General Contamination Criteria For Optical Surfaces
Proceedings of SPIE (February 19 1982)
Surface Particle Obscuration And BRDF Predictions
Proceedings of SPIE (January 02 1990)
Optical throughput model
Proceedings of SPIE (October 15 2012)
Particulate Contamination Control
Proceedings of SPIE (June 03 1987)

Back to Top