Predicting changes in visual appearance of periodic surface from brdf measurements

C. Turbil (1) , I. Gozhyk (1) , J. Teisseire (1) , I. Simonsen (1) , Guillaume Ged (2) , Gaël Obein (2)

1 SVI - Surface du Verre et Interfaces
2 LCM - Laboratoire commun de métrologie LNE-CNAM

The present study focuses on the optical properties of functionalized surfaces and how the surface geometry impacts them. Physical measurements of reflected light are required to understand the visual aspect of such surfaces. Bidirectional Reflection Distribution Function (BRDF) is evaluated in order to identify and understand physical effects induced by different surface functionalization. BRDF measurements of high angular resolution allow us to observe diffraction phenomenon at an unusual scale. Experimental results were compared to theoretical calculation, and then diffraction effect was confirmed. This study stresses that diffractive phenomenon could have an impact on visual aspect even for simple pattern geometry. In the same way, if more complex periodic patterns are considered, as multistate periodicity pattern for example, it could rise to important modification of surface visual aspect.

Mots clés: Surface patterning; glossy behaviour; high resolution BRDF measurements; diffraction effect

Domaines: Science des matériaux [cond-mat.mtrl-sci]

C. Turbil, I. Gozhyk, J. Teisseire, I. Simonsen, Guillaume Ged, et al.. Predicting changes in visual appearance of periodic surface from brdf measurements. 4th CIE Expert Symposium on Colour and Visual Appearance, Sep 2016, Prague, Czech Republic. pp.103-110. ⟨hal-01481140⟩