基于随机相位编码技术的光学安全系统的研究进展

近年来,光学技术在信息安全领域的应用研究得到重大发展,已经远远超出传统的全息防伪的范畴,吸引着越来越多科研人员投身到这一全新领域的研究,目前已提出一些能实现身份认证和信息加密的光学系统。在这些系统实现方案中,最引人注目的是由B Javidi等于1 995年提出并在近几年来渐渐发展起来的双随机相位编码光学加密方案.主要回顾这一技术及其进展

Progress of Optical Security Systems Based on Random-Phase Encoding Technology

Recently optical techniques have been proposed for security information applications, which are far beyond the scope of the classical optical variable devices such as rainbow holograms More and more researchers have been attracted to this new field and are setting up several optical architectures for verification or encryption Among those architectures the most attractive one is the so called double random phase encoding encryption scheme proposed by B.Javidi and coworkers in 1995 Review this technique and its progress in detail