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The Aztec Structure: An Improved Replicable Security Device

机译：AZTEC结构：改进的可复制安全设备

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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：今天主要使用的全息图通常可以分为两类：表面浮雕彩虹全息图或反射型卷全息图。 AZTEC结构是一种特殊的表面浮雕装置，它结合了这两种类型的方面。它具有独特的识别特性，在假冒困难方面有很大的难度，这使得它更加安全。通过全息装置的制造需要两种表面和体积全息图的技术，因此技术上更难以单独制作。该结构比标准表面释放全息图更深，其轮廓具有几个良好的限定步骤的特性，使得当在边缘上观察时，类似于阶梯式金字塔。因此，AZTEC结构的复制需要特殊的高分辨率技术来忠实地记录阶梯式轮廓的亚微米特征，因此更难以制造。 Aztec结构的视觉特性类似于卷全息图，可以看出单一颜色，而不是彩虹颜色。此外，单个COIROR的组合可以编码成单个主体，产生独特的视觉效果。

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