title: Determination of the bulk scattering parameters of diffusing materials.
abstract: Diffusors are widely used optical components having numerous applications. They are commonly used to homogenize light beams and to create particular intensity distributions. The angular scattering profile of bulk scattering diffusing materials is determined by three bulk scattering parameters that are, however, not commonly available. This hampers an accurate implementation of bulk diffusors in ray tracing simulations. In this paper, the bulk scattering parameters of a concentration series of milk diluted with water were determined with the inverse adding-doubling method. Using these values as input, the macroscopic angular scattering profile was simulated using ray tracing software. The simulation results were compared to experimental data, and a good agreement between measured and simulated data was found. The method was also proven to be successful when applied to commercial diffusors.
authors.affiliation: Light and Lighting Laboratory, Catholic University College Ghent, Ghent, Belgium. sven.leyre@kahosl.be
authors.forename: Sven
authors.initials: S
authors.lastname: Leyre
authors.forename: Frédéric B
authors.initials: FB
authors.lastname: Leloup
authors.forename: Jan
authors.initials: J
authors.lastname: Audenaert
authors.forename: Guy
authors.initials: G
authors.lastname: Durinck
authors.forename: Johan
authors.initials: J
authors.lastname: Hofkens
authors.forename: Geert
authors.initials: G
authors.lastname: Deconinck
authors.forename: Peter
authors.initials: P
authors.lastname: Hanselaer
mesh_terms: D000818:Animals; D003198:Computer Simulation; D004867:Equipment Design; D005504:Food Analysis / Q000295:instrumentation; D008027:Light; D008422:Materials Testing; D008892:Milk / Q000737:chemistry; D010969:Plastics; D012542:Scattering, Radiation; D012984:Software; D014867:Water / Q000737:chemistry
chemical_list: D010969:Plastics; D014867:Water