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Roos A, Ribbing CG. Interpretation of integrating sphere signal output for non-Lambertian samples. Appl Opt. 1988;27(18):3833-7doi: 10.1364/AO.27.003833.
Roos, A., & Ribbing, C. G. (1988). Interpretation of integrating sphere signal output for non-Lambertian samples. Applied optics, 27(18), 3833-7. https://doi.org/10.1364/AO.27.003833
Roos, A, and Ribbing, C G. "Interpretation of integrating sphere signal output for non-Lambertian samples." Applied optics vol. 27,18 (1988): 3833-7. doi: https://doi.org/10.1364/AO.27.003833
Roos A, Ribbing CG. Interpretation of integrating sphere signal output for non-Lambertian samples. Appl Opt. 1988 Sep 15;27(18):3833-7. doi: 10.1364/AO.27.003833. PMID: 20539472.
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Appl Opt. 1988 Sep 15;27(18):3833-7. doi: 10.1364/AO.27.003833.

Interpretation of integrating sphere signal output for non-Lambertian samples.

Applied optics

A Roos, C G Ribbing

PMID: 20539472 DOI: 10.1364/AO.27.003833

Abstract

A new formalism is derived for the analysis of signal output from double-beam integrating spheres. The analysis explicitly considers the effects of port losses and a non-Lambertian sample surface and introduces a separation of the diffusely reflected light into two parts: one which should be analyzed as a specular component and one which is fully diffuse. An experimental procedure to determine the two parameters in the formalism is described for two cases, a brushed copper and a rolled aluminum surface, and it is experimentally verified that the formalism eliminates spurious structure from the barium sulfate reference. A criterion is also given for the selection of barium sulfate or polytetrafluorethylene powder as a reference material.

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