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Colorimetric Characterization of Pearlescent Coatings



Maria E. Nadal, Thomas A. Germer


This paper descirbes recent developments at the National Institution of Standards and Technology in the colorimetric characterization of pearlescent coatings. The goal of this research is to develop standard measurement protocols for the accurate color characterization of these coatings using an understanding of their scattering mechanism as a guide. The bi-directional reflectance of a series of samples, where the pearl coat and basecoat are different in color, have been measured for the visible region at incident angle of 15 , 25 , 45 , 65 , and 75 and viewing angles of 80 at 5 steps. This large ensemble of measurements show general trends that are being used to define a subset of measuring geometries that will provided a complete map of the scattering mechanisms present in pearlescent coatings.
Proceedings Title
Proceedings of the 9th Congress of the International Color Association
Conference Dates
June 26-29, 2001
Conference Title
Congress of the International Color Association


color, gonioapparent coatings, pearlescent coatings, reflectance colorimetry


Nadal, M. and Germer, T. (2002), Colorimetric Characterization of Pearlescent Coatings, Proceedings of the 9th Congress of the International Color Association (Accessed July 12, 2024)


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Created January 1, 2002, Updated February 17, 2017