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The Aztec Structure: An Improved Replicable Security Device

机译:Aztec结构:一种改进的可复制安全性设备

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摘要

Holograms that are predominantly in use today as visually identifiable security devices can generally be divided into two categories: either surface relief rainbow holograms or reflection type volume holograms. The Aztec structure is a special surface relief device that combines aspects of both of these types. It has unique identifying characteristics, with provision for great difficulty in counterfeiting, which make it more secure. Its fabrication by holographic means requires techniques of both surface and volume holograms, thus is technically more difficult to make than either separately. The structure is deeper than the standard surface relief hologram, and its profile has the characteristic of several well defined steps, such that, when viewed on edge, resemble a stepped pyramid. Thus, replication of the Aztec structure requires special high resolution techniques to faithfully record the submicron features of the stepped profile, and thus is more difficult to manufacture. The visual characteristics of the Aztec structure are similar to the volume hologram, in that single colors, rather than rainbow colors, can be viewed. Also, a combination of single coiors can be encoded into a single master, yielding unique visual effects.
机译:当今主要用作视觉识别安全设备的全息图通常可分为两类:表面浮雕彩虹全息图或反射型体积全息图。 Aztec结构是一种特殊的表面浮雕装置,结合了这两种类型的方面。它具有独特的识别特性,并提供了极大的伪造难度,使其更加安全。通过全息手段制造其需要表面全息图和体积全息图两者的技术,因此在技术上比分别分开制造更加困难。该结构比标准表面浮雕全息图更深,并且其轮廓具有几个明确定义的台阶的特征,因此,从边缘看时,它类似于阶梯金字塔。因此,复制阿兹台克人的结构需要特殊的高分辨率技术,以忠实地记录台阶轮廓的亚微米特征,因此更难以制造。阿兹台克人结构的视觉特征类似于体积全息图,因为可以看到单色而不是彩虹色。同样,可以将单个颜色的组合编码为单个母版,从而产生独特的视觉效果。

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