METHOD AND DEVICE FOR THE POLARIMETRIC ANALYSIS OF THE THREE-DIMENSIONAL INFRARED SCATTERING FROM AN OBJECT USING A PARABOLIC MIRROR ASSEMBLY

摘要

The invention relates to a method and a device for the polarimetric analysis of the three-dimensional infrared scattering from an object using a parabolic mirror assembly. The object (2) is illuminated by incident infrared radiation (32) by means of the mirror (30) using a determined angle of incidence. The mirror reflects the radiation towards the object as well as the radiation (36) scattered by said object. The inventive method consists in measuring the radiation scattered along a determined scattering angle and varying the scattering angle and, optionally, the angle of incidence. According to the invention, the incident radiation and scattered radiation are polarised and, in order to analyse the three-dimensional infrared scattering from the object, the polarisations are also varied. The scattered radiation is measured according to the values of the incident radiation polarisation, the scattered radiation polarisation, the scattering angle and, optionally, the angle of incidence, and the measurements are processed in order to obtain the desired properties of the object. The invention is particularly suitable for characterising materials.