Patent ID: 7113337
Filing Date: 2006-09-26
Classification: G02B

Abstract:
1. Multilayer optically anisotropic structure comprising at least several layers, refraction indexes of which in at least one region of the spectrum of light, their thickness and their combination is selected such as to provide an interference extremum for at least one polarization of light in the said region of the spectrum and on at least one side of the multilayer optical structure, wherein at least one of the layers is optically anisotropic and has been made out of at least one organic material, molecules or fragments of molecules of which have flat build and where at least a part of the said layer has crystalline structure, while the following relationships are true for the main axes of ellipsoids of the imaginary and the real parts of the refraction index of the anisotropic layer in the region of at least one of the absorption bands of the layer's material on an area with linear dimension no less than the wavelength of the maximum of at least one absorption band: where, K