Non-contact quantitative diffuse reflectance spectroscopy

doi:https://doi.org/10.1117/12.2183764

Non-contact quantitative diffuse reflectance spectroscopy

Verónica Sorgato,Michel Berger,Charlotte Emain,Anne Koenig,Blandine Roig,Christine Vever‐Bizet+3 more-2015-07-16-Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

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TL;DRAbstract

We validate a non-contact Diffuse Reflectance Spectroscopy (DRS) system as a first stage to approach quantitative multi-spectral imaging technique. The non-contact DRS system with separated illumination and detection paths was developed with different progressive set-ups which were all compared to a well-founded contact DRS system. While quantitation of the absorption coefficient is well achieved with the existing method, the calculation of the scattering coefficient is deteriorated by the non-contact architecture measurements. We have therefore developed an adaptive reference-based algorithm to compensate for this effect.

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We validate a non-contact Diffuse Reflectance Spectroscopy (DRS) system as a first stage to approach quantitative multi-spectral imaging technique. The non-contact DRS system with separated illumination and detection paths was developed with different progressive set-ups which were all compared to a well-founded contact DRS system. While quantitation of the absorption coefficient is well achieved with the existing method, the calculation of the scattering coefficient is deteriorated by the non-contact architecture measurements. We have therefore developed an adaptive reference-based algorithm to compensate for this effect.

Keywords

Diffuse reflectance infrared fourier transformOpticsDiffuse reflectionMaterials scienceComputer scienceReflectivitySpectroscopyAttenuation coefficient

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