Kostyukevych, S.A.; Moskalenko, N.L.; Shepeliavyi, P.E.; Girnyk, V.I.; Tverdokhleb, I.V.; Ivanovsky, A.A.
(Semiconductor Physics Quantum Electronics & Optoelectronics, 2001)
Modern holographic protective elements used as emblems against counterfeiting are being more complicated as they should oppress criminal world. 2D, 3D, 3D rainbow holograms or simple diffraction structures protecting ...