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Proceedings Paper

Study of varnish layers with optical coherence tomography in both visible and infrared domains
Author(s): Gaël Latour; Gaëlle Georges; Laure Siozade; Carole Deumié; Jean-Philippe Echard
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Paper Abstract

Optical Coherence Tomography (OCT) is an attractive technique to study works of art because it allows non-destructive and contactless analysis. In the case of musical instruments, the study of wood finishes could give interesting information as the thicknesses of the layers, the number of layers and the presence of fillers. A time-domain full-field OCT, achieving high resolution, is used in both visible and near infrared ranges to characterize semi-transparent layers containing scattering particles as charged varnish layers. We present OCT measurements on wood varnished with different coatings. We show that the detection of pigment particles is dependent of the spectral range and that both spectral domains allow to reach micrometer-scale spatial resolutions.

Paper Details

Date Published: 7 July 2009
PDF: 7 pages
Proc. SPIE 7391, O3A: Optics for Arts, Architecture, and Archaeology II, 73910J (7 July 2009); doi: 10.1117/12.827856
Show Author Affiliations
Gaël Latour, Institut Fresnel, CNRS, Aix-Marseille Univ. (France)
Gaëlle Georges, Institut Fresnel, CNRS, Aix-Marseille Univ. (France)
Laure Siozade, Institut Fresnel, CNRS, Aix-Marseille Univ. (France)
Carole Deumié, Institut Fresnel, CNRS, Aix-Marseille Univ. (France)
Jean-Philippe Echard, Cité de la Musique (France)


Published in SPIE Proceedings Vol. 7391:
O3A: Optics for Arts, Architecture, and Archaeology II
Luca Pezzati; Renzo Salimbeni, Editor(s)

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