Development of a portable diffuse reflectance spectroscopy system between 850 and 1000nm

Markus Wagner; Markus Zimmermann; Oliver Fugger; Florian Foschum; Alwin Kienle

doi:10.1117/12.2670708

9 August 2023 Development of a portable diffuse reflectance spectroscopy system between 850 and 1000nm

Markus Wagner, Markus Zimmermann, Oliver Fugger, Florian Foschum, Alwin Kienle

Proceedings Volume 12628, Diffuse Optical Spectroscopy and Imaging IX; 1262823 (2023) https://doi.org/10.1117/12.2670708
Event: European Conferences on Biomedical Optics, 2023, Munich, Germany

Abstract

We aim to develop a LED-based precise method to determine the optical properties of scattering media between 850 and 1000 nm. For this purpose, we designed a portable device based on spatially resolved diffuse reflection spectroscopy. The approach uses a spectrometer and fiber-coupled NIR-LEDs. We apply an inverse Monte Carlo model to determine the optical properties. A set of 3x4 phantoms serves for validation. The optical properties determined with our sensor and with an standard integrating sphere device agree well. The accuracy of μ′_s and μ_a is around three percent. Furthermore we theoretically analyse the influence of temperature change of the LEDs on the optical properties.

Citation Download Citation

Markus Wagner, Markus Zimmermann, Oliver Fugger, Florian Foschum, and Alwin Kienle "Development of a portable diffuse reflectance spectroscopy system between 850 and 1000nm", Proc. SPIE 12628, Diffuse Optical Spectroscopy and Imaging IX, 1262823 (9 August 2023); https://doi.org/10.1117/12.2670708

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