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Bidirectional scattering distribution function measurements from volume diffusers: Correction factors and associated uncertainties

Published

Author(s)

Thomas A. Germer

Abstract

We consider the effect of volume diffusion on measurements of the bidirectional scattering distribution function (BSDF) when a finite distance is used for the solid angle defining aperture. We derive expressions for correction factors that can be used when the reduced scattering coefficients and the index of refraction are known. When these quantities are not known, the expressions can be used to guide the assessment of measurement uncertainty. We find that some measurement geometries reduce the effect of volume diffusion compared to their reciprocal geometries.
Citation
Applied Optics
Volume
55
Issue
25

Keywords

BRDF, BSDF, reflectance, transmittance, volume scattering

Citation

Germer, T. (2016), Bidirectional scattering distribution function measurements from volume diffusers: Correction factors and associated uncertainties, Applied Optics, [online], https://doi.org/10.1364/AO.55.006978 (Accessed April 13, 2024)
Created September 1, 2016, Updated November 10, 2018