FIELD: physics.
SUBSTANCE: proposed method comprises irradiating controlled coat by optical radiation. Note here that wavelength of radiation falling onto controlled surface is readjusted in narrow spectral range. Then, radiation flows reflected from the coat are registered, dependence of reflected radiation flow upon wavelength is revealed to determine therefrom the dependence of reflectivity factor upon wavelength and first derivative of reflectivity factor of three-layer system "air-coat-substrate" to determine thickness and reflectivity index of the coat therefrom.
EFFECT: faster determination.
3 dwg
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