有密件要保藏的单位可以从完全可靠地存储保密信息的新系统中受益.这个系统是基于原来为全息干涉量度学而发展起来的一种方法——夹层全息术,这个系统的一种应用是许可建立能杜绝伪造品的身份证.1980年4月份,在全息显示协会举行的讨论会和展览会上,全息显示公司的负责人汉斯·别尔克哈根(Hans Bjelkhagen)对全息观察公司斯德哥尔摩激光小组研制的这个系 The units that have the secret to be preserved can benefit from a new system for storing confidential information with complete confidence. The system is based on a method originally developed for holographic interference metrology - sandwich holography. One application of this system is Permitting the creation of ID cards that eliminate fake products In April 1980, at the Holographic Society’s seminars and exhibitions, Hans Bjelkhagen, head of Holographic Display, This department developed by the Stockholm Laser Group