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Abildgaard OH, Frisvad JR, Falster V, et al. Noninvasive particle sizing using camera-based diffuse reflectance spectroscopy. Appl Opt. 2016;55(14):3840-6doi: 10.1364/AO.55.003840.
Abildgaard, O. H., Frisvad, J. R., Falster, V., Parker, A., Christensen, N. J., Dahl, A. B., & Larsen, R. (2016). Noninvasive particle sizing using camera-based diffuse reflectance spectroscopy. Applied optics, 55(14), 3840-6. https://doi.org/10.1364/AO.55.003840
Abildgaard, Otto Højager Attermann, et al. "Noninvasive particle sizing using camera-based diffuse reflectance spectroscopy." Applied optics vol. 55,14 (2016): 3840-6. doi: https://doi.org/10.1364/AO.55.003840
Abildgaard OH, Frisvad JR, Falster V, Parker A, Christensen NJ, Dahl AB, Larsen R. Noninvasive particle sizing using camera-based diffuse reflectance spectroscopy. Appl Opt. 2016 May 10;55(14):3840-6. doi: 10.1364/AO.55.003840. PMID: 27168301.
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Appl Opt. 2016 May 10;55(14):3840-6. doi: 10.1364/AO.55.003840.

Noninvasive particle sizing using camera-based diffuse reflectance spectroscopy.

Applied optics

Otto Højager Attermann Abildgaard, Jeppe Revall Frisvad, Viggo Falster, Alan Parker, Niels Jørgen Christensen, Anders Bjorholm Dahl, Rasmus Larsen

PMID: 27168301 DOI: 10.1364/AO.55.003840

Abstract

Diffuse reflectance measurements are useful for noninvasive inspection of optical properties such as reduced scattering and absorption coefficients. Spectroscopic analysis of these optical properties can be used for particle sizing. Systems based on optical fiber probes are commonly employed, but their low spatial resolution limits their validity ranges for the coefficients. To cover a wider range of coefficients, we use camera-based spectroscopic oblique incidence reflectometry. We develop a noninvasive technique for acquisition of apparent particle size distributions based on this approach. Our technique is validated using stable oil-in-water emulsions with a wide range of known particle size distributions. We also measure the apparent particle size distributions of complex dairy products. These results show that our tool, in contrast to those based on fiber probes, can deal with a range of optical properties wide enough to track apparent particle size distributions in a typical industrial process.

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