Analysis of Optical Schemes of Bench to Recover Special Holographic Protective Element and Devices to Check Authenticity of Protective Holograms with Such Elements

Schemes of optical and electronic correlators to implement systems for identification of documents having protective holograms with special elements are analyzed and investigated. Results are given of mathematical simulation of stages to recover the special element and check its authenticity. Variant of modernization of the investigated optical schemes are offered to improve protection against the unauthorized access to the hidden intrasystem data.