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提出了一种利用计算全息实现对彩虹全息图的加密，利用全息干涉对信息解码的新防伪方法．将计算全息和普通的彩虹全息合成在一张全息图上．通常情况下只能看到普通的彩虹全息标识图，用另外一张计算全息图解码后，在其干涉图样中可再现出用于加密的图象信息．该方法可在不增加原有设备和条件的情况下，大大提高彩虹全息图的防伪力度．
A new anti-counterfeiting method using holographic information to encrypt rainbow holograms is proposed. The calculated hologram and normal rainbow hologram are synthesized on a hologram. Normally, you can only see the ordinary rainbow hologram logo, with another calculated hologram decoding, in its interference pattern can be reproduced for the encrypted image information. The method can greatly enhance the anti-counterfeiting performance of the rainbow hologram without increasing the original equipment and conditions.