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Ha Liuzhu,Jefferey K,F Cheng Department of Optical Engineering,Beijing Institute of Technology,Beijing 100081 HongKong Enter CAD Technology Center. A New Coding Method of Producing Laser Rainbow Embossed Holographic Labels for Anti-CounterfeitingJ. Transactions of Beijing institute of Technology, 1997, (2).
Citation: Ha Liuzhu,Jefferey K,F Cheng Department of Optical Engineering,Beijing Institute of Technology,Beijing 100081 HongKong Enter CAD Technology Center. A New Coding Method of Producing Laser Rainbow Embossed Holographic Labels for Anti-CounterfeitingJ. Transactions of Beijing institute of Technology, 1997, (2).
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A New Coding Method of Producing Laser Rainbow Embossed Holographic Labels for Anti-Counterfeiting

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  • A point-source reference wave is used to produce interference fringes ofequal thickness. These fringes act as the random background on the laser rainbowembossed holographic labels for anti- counterfeiting. This method becomes a newway to code on holograms. The features of this method are that it is nearlyimposslibe to imitate the labels after using this method, it would not cause anyextra price to the product,and it could be used in the 'frontline' of anti- counter-feiting.
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