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 N IR-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 o f t emperature c hange o f the LEDs on the optical properties.

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