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.

© 1988 Optical Society of America

Interpretation of integrating sphere signal output for nonideal transmitting samples

Arne Roos
Appl. Opt. 30(4) 468-474 (1991)

Anomalies in integrating sphere measurements on structured samples

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Appl. Opt. 27(18) 3828-3832 (1988)

Effects of non-Lambertian surfaces on integrating sphere measurements

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Lambertian radiance and transmission of an integrating sphere

Robert L. Lucke
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Stray-light corrections in integrating-sphere measurements on low-scattering samples

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