用于防伪的编码全息图(英文)

Coded Hologram for Anticounterfeiting

本文对加密防伪全息图像的光学编码及解码技术进行了研究。论述了理论基础,给出了光路设计,在大量实验的基础上,首次提出了一种带余弦剖面的新型位相编码器,并利用该编码器获得了满意的编、解码效果。

The coded technique of anticounterfeiting hologram is studied in thispaper. The theory and design of the optical coding system are described. Basedon a lot of experiments a new phase encoder with cosine profile is proposed. withthis new design, satisfactory results have been achieved.