CONTROLLED ANTI-GLARE SCATTERING FILTER Russian patent published in 2017 - IPC G02B5/30 G02F1/13 

FIELD: physics.

SUBSTANCE: controlled anti-glare scattering filter comprises series-installed optically transparent systems using an optically transparent dielectric substance, thin optically transparent substrates and series of liquid crystal films, whose opposite surfaces have an electrode system, wherein the surfaces of the optically transparent dielectric substance have orientation marks. The also comprises a signal processing and control system, which includes a sensor for measuring intensity and direction of arrival of polarisation components of optical radiation, a processor, a sensor for measuring spatial position of optical radiation receivers relative to the filter. The filter also comprises a forming system, from whose output of which control potentials are distributed between electrode systems, wherein molecules of the liquid crystal films of the filter under the action of control potentials form, through one of the orientation marks, spatial optical anisotropy which scatters radiation passing through the filter. The filter also includes an irradiator, on one side of the surface of each liquid crystal film there are systems of narrow electrodes, which on the entire length comprise adjoining leads - systems of narrow, short electrodes, arranged orthogonally and/or at an angle to the narrow electrodes, having a given length, which determines their degree of contribution to optical anisotropy in liquid crystal films when control potentials are applied on corresponding electrodes. The distance between the narrow electrodes and the spacing between leads also determine their degree of contribution to optical anisotropy. On the opposite sides of the surface of each liquid crystal film there are systems of short optically transparent electrodes or systems of narrow electrodes, which comprise adjoining leads - systems of narrow, short electrodes, arranged orthogonally and/or at an angle to the narrow electrodes.

EFFECT: production of an easily producible and efficient anti-glare filter, adaptive to sources of polarised and non-polarised radiation.

14 cl, 1 tbl, 17 dwg