HOLOGRAPHIC PROTECTIVE FACILITY Russian patent published in 2003 - IPC

FIELD: holography. SUBSTANCE: holographic protective facility has first and second microstructures generating holographic images recorded in corresponding sets of non-superimposed zones of record carrier. Zones of one set alternate with zones of another set and these both alternating linear structures are not visible to unaided eye and holographic protective facility generates two or more holographic images visible from individual directions of vision and visible with inclination of facility. Each particular holographic image is generated in direction of vision entirely of in part by holographic structure coupled to one set of alternating lines. EFFECT: enhanced brightness and sharpness of multichannel holographic images, reduced effect of roughness of surface. 20 cl, 6 dwg