MULTILAYER OPTICAL COAT Russian patent published in 2004 - IPC

FIELD: production of anisotropic structures. SUBSTANCE: multilayer optical anisotropic structure includes at least several layers which refractive indices in one spectral region as minimum, their thickness and combination are so selected that ensure interference extremum for at least one light polarization in specified spectral region and on one side of multilayer optical structure as minimum. At least one layer of structure is optically anisotropic and is formed from one organic substance which molecules or fragments of molecules have flat structure and at least part of mentioned layer has crystalline structure. Relations specified in formula of invention are fulfilled for main values of semi-axes of ellipsoids of imaginary and real parts of refractive coefficient of anisotropic layer in region of at least single absorption band of substance of layer. EFFECT: enhanced efficiency of conversion of radiation determined by functional purpose of structure thanks to high-degree reproducibility of anisotropy of one layer in structure as minimum. 13 cl, 6 dwg