Digital holographic inspection for drying processes of paint films and ink dots

M. Yokota; F. Aoyama

doi:10.1117/12.2270071

26 June 2017 Digital holographic inspection for drying processes of paint films and ink dots

M. Yokota, F. Aoyama

Proceedings Volume 10329, Optical Measurement Systems for Industrial Inspection X; 103292U (2017) https://doi.org/10.1117/12.2270071
Event: SPIE Optical Metrology, 2017, Munich, Germany

Abstract

Digital holographic techniques to investigate drying processes of both paint films and ink dot is presented. The proposed technique based on digital holographic interferometry can achieve both visualization of variations and analysis of dryness of paint films in the drying process by using phase changes between two subsequent reconstructed complex amplitudes of the reflected light from the film. To follow the drying processes, holograms are recorded at a constant time interval. Phase-shifting digital holography has been applied to analyze the dryness of commercial paints applied on the metal plate. For analysis of an ink dot having diameter of a few hundred micrometers, digital holographic microscopy is applied to evaluating the time history of dryness of ink dot in the drying process. This paper describes these holographic techniques applied to the commercially available paint and ink and presents some experimental results.

Citation Download Citation

M. Yokota and F. Aoyama "Digital holographic inspection for drying processes of paint films and ink dots", Proc. SPIE 10329, Optical Measurement Systems for Industrial Inspection X, 103292U (26 June 2017); https://doi.org/10.1117/12.2270071

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