Comprehensive analysis of the diffuse-to-near-normal-viewing reflectance factor of paint films

Augusto Garcia-Valenzuela; Fabio S. A. Cuppo; Jose A. Olivares; Julian M. Galvan-Miyoshi

doi:10.1117/1.3574069

1 May 2011 Comprehensive analysis of the diffuse-to-near-normal-viewing reflectance factor of paint films

Augusto Garcia-Valenzuela, Fabio S. A. Cuppo, Jose A. Olivares, Julian M. Galvan-Miyoshi

Author Affiliations +

Optical Engineering, Vol. 50, Issue 5, 053602 (May 2011). https://doi.org/10.1117/1.3574069

Abstract

We present a comprehensive derivation of the so-called diffuse to near-normal-viewing reflectance factor of an architectural paint coating and its measurement with an integrating sphere. We focus our attention to the surface correction terms and consider the case when the surface is rough. We point out limits of the standard formula with the so-called Saunderson corrections commonly used for paint coatings. We provide and discuss a corrected definition of the roughness-dependent "gloss factor" needed to describe specular-component excluded measurements. We show that as the roughness of the surface increases, the specular-excluded reflectance-factor increases, approaching its value with the specular-component included.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Augusto Garcia-Valenzuela, Fabio S. A. Cuppo, Jose A. Olivares, and Julian M. Galvan-Miyoshi "Comprehensive analysis of the diffuse-to-near-normal-viewing reflectance factor of paint films," Optical Engineering 50(5), 053602 (1 May 2011). https://doi.org/10.1117/1.3574069

Published: 1 May 2011

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