Abstract

A measurement system for a distance insensitive acquisition of the reflectance from turbid media is presented. The geometric relationships of the detection unit are discussed theoretically and subsequently verified using Monte Carlo simulations. In addition, an experimental setup is presented to prove the theoretical considerations and simulations. The use of the presented measurement system allows measurements of the reflectance in a distance range of approximately $2.5\,{\rm cm}$ with a deviation of less than ${\pm}0.5 \%$ for highly scattering media. This contrasts with the use of a fiber in a classical detection unit placed at a defined angle and position relative to the sample surface, which results in deviations of ${\pm}30 \%$ in the measured reflectance over the same distance range.

© 2022 Optica Publishing Group

Influence of Lambertian surface scattering on the spatially resolved reflectance from turbid media: a computational study

Benjamin Lindner, Florian Foschum, and Alwin Kienle
Appl. Opt. 61(10) 2775-2787 (2022)

Spatially resolved reflectance from turbid media having a rough surface. Part I: simulations

Benjamin Lindner, Florian Foschum, and Alwin Kienle
Appl. Opt. 61(28) 8361-8370 (2022)

Noninvasive determination of the optical properties of two-layered turbid media

Alwin Kienle, Michael S. Patterson, Nora Dögnitz, Roland Bays, Georges Wagnières, and Hubert van den Bergh
Appl. Opt. 37(4) 779-791 (1998)

Precise determination of the optical properties of turbid media using an optimized integrating sphere and advanced Monte Carlo simulations. Part 2: experiments

Florian Bergmann, Florian Foschum, Ralf Zuber, and Alwin Kienle
Appl. Opt. 59(10) 3216-3226 (2020)

Method to determine the optical properties of turbid media

Prerana , Mangalpady R. Shenoy, and Bishnu P. Pal
Appl. Opt. 47(17) 3216-3220 (2008)