FORMATION OF DYNAMIC AND BINOCULAR VOLUMETRIC IMAGES IN SECURITY HOLOGRAMS WITH A ZERO DIFFRACTION ORDER
S. B. Odinokov1, A. F. Smyk2, A. V. Shurygin1,2
1Bauman Moscow State Technical University, Moscow, Russia
2SLL "James River Branch", Moscow, Russia
Keywords: защитные голограммы, динамические изображения, трекограммы, security holograms, dynamic images, trackograms
Abstract
Different versions of one of the types of zero-order holograms, namely trackograms for the formation of security features for nonexpert verification of their authenticity, are considered. A volumetric image in the trackograms is formed by glare on the walls of toroidal track surfaces, which are relief bands on the recording material. Varying the track shape, the track length, and the number of sections of different tracks at one point in an image can help one obtain security features convenient for nonexpert hologram identification. The dimensions and depths of the tracks are compatible with conventional embossed hologram technology. The photographs of the holograms forming images in white light are given.
|
