... considered. The first is the homodyne interferometry in which the spacing is obtained from light intensity variation due to interference. The second is polarization interferometry in which the spacing is determined from the phase difference between the parallel and perpendicular components of polarized light...

...M. Kaneta; H. Todoroki; H. Nishikawa; Y. Kanzaki; Y. Kawahara The dynamic behavior of oil films formed between a band-shaped nitrile rubber specimen with a D-shaped or lip-shaped cross section and an oscillating glass plate is directly observed by means of the mono-chromatic optical interferometry...

...J. Lord; A. Jolkin; R. Larsson; O. Marklund A hybrid evaluation scheme for EHL film thickness determination is proposed and discussed. The film thickness profile in the contact region is measured using interferograms produced with a novel multi channel interferometry method. Since the refractive...