中国激光, 2002, 29 (8): 743, 网络出版: 2006-08-08  

多重分数傅里叶变换全息防伪术

Multiple Fractional Fourier Transform Hologram Applied in Anti-counterfeiting
作者单位
1 四川大学物理系,四川成都,610064
2 邵阳学院物理系,湖南邵阳,422000
摘要
基于分数傅里叶变换全息图(FRTH)的记录和再现的特殊性,提出一种记录多重全息图的新方法,可发展一种多重FRTH防伪术.即利用简单的分数傅里叶变换系统,并改变其分数阶,就可以很方便地在一块感光板上分别记录多个物体(或同一物体的不同部分)在不同位置上的不同阶的FRTH.制作了多重分数傅里叶变换全息图,讨论了其防伪特性,并获得了满意的再现结果.
Abstract
Based on the characteristics of the FRTH in recording and reconstruction, a multiple fractional Fourier transform hologram (M FRTH) and its application in anti counterfeiting were proposed. The FRTH of several objects (or different parts of one object) with different transform order in different positions were respectively recorded on one holographic plate with simple fractional Fourier transform system conveniently. The multiple fractional Fourier transform hologram was fabricated and its characteristics in anti counterfeiting were discussed.
参考文献

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曾阳素, 张怡霄, 杜惊雷, 郭永康. 多重分数傅里叶变换全息防伪术[J]. 中国激光, 2002, 29(8): 743. 曾阳素, 张怡霄, 杜惊雷, 郭永康. Multiple Fractional Fourier Transform Hologram Applied in Anti-counterfeiting[J]. Chinese Journal of Lasers, 2002, 29(8): 743.

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