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2006

Bi-directional Reflectance Distribution Function

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Analysis Of Paper Gloss, Jonathan Arney, Ling Ye, Jiff Wible Jan 2006

Analysis Of Paper Gloss, Jonathan Arney, Ling Ye, Jiff Wible

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Standard techniques for the measurement of paper gloss are capable of providing highly repeatable indices of the gloss phenomenon. However, it is well known that the gloss phenomenon involves more than can be represented by a single number. A recently developed instrument called a microgoniophotometer has been applied to the characterization of paper gloss. The Bi-directional Reflectance Distribution Function (BRDF) plots generated by this device were shown to be related quantitatively and directly to Fresnel's law of specular reflection and to the surface roughness of the sample. Unlike standard gloss meter measurements, the BRDF enables the analyst to distinguish between …