
Proceedings Paper
Goniochromatic and sparkle properties of effect pigmented samples in multidimensional configurationFormat | Member Price | Non-Member Price |
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Paper Abstract
The effects of goniochromatism and sparkle are gaining more and more interest for surface refinement applications
driven by demanding requirements from such different branches as automotive, cosmetics, printing and packaging
industry. The common background and intention in all of these implementations is improvement of the visual appearance
of the related commercial products. Goniochromatic materials show strong angular-dependent reflection characteristics
and hence a color impression depending on the effective spatial arrangement of illumination and observation relative to
the surface of the artifact. Sparkle is a texture related effect giving a surface which is irradiated directionally, like direct
sun light, a bright glittering effect, similar to twinkling stars at the night sky. The prototype for this new effect is the
Xirallic® pigment of MERCK KGaA, Germany. The same pigment shows in diffuse irradiation, like on a cloudy day, a
different visual effect called graininess (coarseness) which appears as a granular structure of the surface. Both effects
were studied on especially manufactured samples of a dilution series in pigment concentration and a tonality series with
carbon black. The experiments were carried out with the robot-based gonioreflectometer and integrating sphere facilities
at Physikalisch-Technische Bundesanstalt (PTB) in multidimensional configurations of directional and diffuse
irradiation. The research is part of the European Metrology Research Program (EMRP), which is a metrology-focused
program of coordinated Research & Development (R&D) funded by the European Commission and participating
countries within the European Association of National Metrology Institutes (EURAMET). More information and
updated news concerning the project can be found on the xD-Reflect website http://www.xdreflect.eu/.
Paper Details
Date Published: 13 March 2015
PDF: 7 pages
Proc. SPIE 9398, Measuring, Modeling, and Reproducing Material Appearance 2015, 93980O (13 March 2015); doi: 10.1117/12.2078727
Published in SPIE Proceedings Vol. 9398:
Measuring, Modeling, and Reproducing Material Appearance 2015
Maria V. Ortiz Segovia; Philipp Urban; Francisco H. Imai, Editor(s)
PDF: 7 pages
Proc. SPIE 9398, Measuring, Modeling, and Reproducing Material Appearance 2015, 93980O (13 March 2015); doi: 10.1117/12.2078727
Show Author Affiliations
Andreas Höpe, Physikalisch-Technische Bundesanstalt (Germany)
Kai-Olaf Hauer, Physikalisch-Technische Bundesanstalt (Germany)
Sven Teichert, Physikalisch-Technische Bundesanstalt (Germany)
Kai-Olaf Hauer, Physikalisch-Technische Bundesanstalt (Germany)
Sven Teichert, Physikalisch-Technische Bundesanstalt (Germany)
Dirk Hünerhoff, Physikalisch-Technische Bundesanstalt (Germany)
Christian Strothkämper, Physikalisch-Technische Bundesanstalt (Germany)
Christian Strothkämper, Physikalisch-Technische Bundesanstalt (Germany)
Published in SPIE Proceedings Vol. 9398:
Measuring, Modeling, and Reproducing Material Appearance 2015
Maria V. Ortiz Segovia; Philipp Urban; Francisco H. Imai, Editor(s)
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