METHOD OF DETERMINING THE REFLECTION OR TRANSMISSION COEFFICIENTS OF OPTICAL PARTS

摘要

FIELD: measurement technology.;SUBSTANCE: invention relates to the field of photometry and relates to a method for measuring reflection coefficients or transmitting optical components. Method includes performing measurements of the radiation power with the setting of the controlled part in the measurement circuit and without setting it. Measurements are carried out in two recording channels. In the first channel, the radiation power P₁, that enters the measurement circuit from the radiation source is provided. In the second channel, the radiation power P₂ is measured taking into account the losses due to a two-pass passage of the controlled part or a reference element with an adjustable transmittance T_et. To determine the reflection coefficients or the transmission of optical components, the following relation is used: where S – reflection or transmission coefficient of the controlled part, and , and – radiation power values at the stage of the statement of the controlled part in the first and second registration channels, P₁ and P₂ – radiation power values at the step without the controlled part in the first and second registration channels, T_et is the transmittance of the reference element.;EFFECT: technical result is to improve the measurements accuracy.;1 cl, 1 dwg