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This article describes a simple and fast angle-scanning reflectometer. Approximate formulas for the design and implementation of this type of reflectometer are provided. An experimental device was assembled and its performance was evaluated. The instrument scans the angle of incidence of a laser beam in a range of 5°–10° in less than 0.2ms. The reflectance equivalent noise of our experimental device was about 0.005. The instrument is suitable to measure the coherent reflectance versus the angle of incidence from light diffusing samples.
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Garcı́a-Valenzuela et al. (2006) studied this question.
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