Non-invasive quantitative characterization of varnish thickness on gilt leather by line-field confocal optical coherence tomography

Giulia Galante; Maëlle Vilbert; Laurianne Robinet; Marie-Claire Schanne-Klein; Gaël Latour

doi:10.1117/12.2672564

9 August 2023 Non-invasive quantitative characterization of varnish thickness on gilt leather by line-field confocal optical coherence tomography

Giulia Galante, Maëlle Vilbert, Laurianne Robinet, Marie-Claire Schanne-Klein, Gaël Latour

Author Affiliations +

Proceedings Volume 12620, Optics for Arts, Architecture, and Archaeology (O3A) IX; 1262006 (2023) https://doi.org/10.1117/12.2672564
Event: SPIE Optical Metrology, 2023, Munich, Germany

Abstract

Line-field confocal optical coherence tomography (LC-OCT) is an alternative to conventional OCT that combines OCT and confocal microscopy. This technique gives access to three-dimensional (3D) images with a micrometer resolution in the three spatial directions and enhances signal from the deepest layers within the material. After an experimental determination of the device characteristics, the technique is used for the investigation of16th to 18th century fragments of gilt leathers wall-hangings. In these objects, the various layers within the varnish can be identified and the effect of a restoration treatment can be observed to validate the varnish removal process.

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Citation Download Citation

Giulia Galante, Maëlle Vilbert, Laurianne Robinet, Marie-Claire Schanne-Klein, and Gaël Latour "Non-invasive quantitative characterization of varnish thickness on gilt leather by line-field confocal optical coherence tomography", Proc. SPIE 12620, Optics for Arts, Architecture, and Archaeology (O3A) IX, 1262006 (9 August 2023); https://doi.org/10.1117/12.2672564

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