Patent ID: 8142863

Claim:
An optically anisotropic compensation panel comprising at least one optically anisotropic layer based on an ordered guest-host system comprising an anisotropic host matrix, and a guest component comprising guest particles, wherein the anisotropic host matrix comprises an organic compound transparent to electromagnetic radiation in the visible spectral range, the guest particles provide an absorption additional to an absorption of the anisotropic host matrix, and said additional absorption is realized in at least one principal direction of the anisotropic host matrix in at least one subrange of the wavelength range from approximately 250 to 2500 nm; wherein the organic compound for the host matrix has a general structural formula I where Sys is an at least partially conjugated substantially planar polycyclic molecular system, X is a carboxylic group —COOH, m is 0, 1, 2, 3 or 4; Y is a sulfonic group —SO 3 H, n is 0, 1, 2, 3 or 4; Z is a carboxamide, p is 0, 1, 2, 3 or 4; Q is a sulfonamide, v is 0, 1, 2, 3 or 4; D is a counterion; s is the number of counterions providing electrically neutral state of the molecule; R is a substituent selected from the list comprising CH 3 , C 2 H 5 , Cl, Br, NO 2 , F, CF 3 , CN, OH, CH 3 , OC 2 H 5 , OCOCH 3 , OCN, SCN, NH 2 , and NHCOCH 3 , and w is 0, 1, 2, 3 or 4; and wherein the compensation panel possesses a spectrally controllable dispersion of refractive indices.