Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: scattering measurements

Sortuj według:

Ogranicz wyniki do:

Non-invasive mesurements of transparent fibres

Świrniak Grzegorz

Metrology and Measurement Systems

2020

Vol. 27, nr 1

19--31

This paper presents a non-invasive measurement method for simultaneous characterization of diameter and refractive index of transparent fibres. The method is based on scattering of a polychromatic beam of light by a side-illuminated fibre under study. Both quantities of interest are inversely calculated from the scattering far-field region in the vicinity of the primary rainbow. The results of practical measurements are examined with the use of a novel optical system for laboratory-level tests. An analysis of prediction errors for 20–120 μm thick fibres having various refractive indices helps to assess the outcome of the measurement data. The results show a clear route to improve the measurement process in on-line industrial process control.

Application of imaging visibility to measurement of correlation coefficient of scattering potential

Liu H., Wang W., Liu J., Liu W.

Optica Applicata

2011

Vol. 41, nr 3

557--565

It is shown that the imaging visibility of intensity correlated scattered field may be utilized to determine the normalized correlation coefficient of the scattering potential (CCSP) of the quasi-homogeneous (QH) media illuminated by a scalar plane wave. The relationship between the imaging visibility and the CCSP is constructed by analytical forms. As long as the visibility of the intensity correlated scattered field is known, the scaled width of the CCSP can be expressed by solutions of the inverse scattering problem.

Method for Measuring Optical Parameters in Weakly Absorbing Turbid Media

Zhao Z., Törmänen M., Myllylä R.

Molecular and Quantum Acoustics

2004

Vol. 25

257-267

This article develops a simple, yet effective technique of measuring optical parameters in weakly absorbing turbid samples. Although based on diffusion theory, this technique largely relaxes its strict non-boundary and spot source requirements by choosing a suitable source-detector distance. Moreover, the technique is applicable not only to liquid samples, but also to solids or on-line measurements. Experimental results demonstrate that, measured by this method, the reduced scattering coefficients of intralipid suspensions are in good agreement with those obtained by other authors. The paper also reports on the application of this technique to scattering measurements in pulp.