PROCESS OF QUANTITY PRODUCTION OF COPIES OF RELIEF HOLOGRAMS AND DEVICE FOR THEIR MANUFACTURE Russian patent published in 1997 - IPC

FIELD: optics, methods and devices for quantity production of copies of relief holograms. SUBSTANCE: process consists in deposition of layer of low-viscosity moving polymer roll material hardening under action of UV radiation, in application of material with polymer layer on copied elements of formation of copies moving along closed circuit in the form of endless belt and in separation of roll material with relief copies from copied elements. Polarization of polymer layer is carried out by irradiation of it with UV radiation through copied elements made from material transparent for ultraviolet radiation. EFFECT: enhanced efficiency of process. 20 cl, 2 dwg