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Optical authentication method using a three-dimensional phase object with various wavelength readouts

机译:使用具有各种波长读数的三维相位对象的光学认证方法

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摘要

An optical system for authentication using a 3D (3D) random phase object with various wavelength readouts is proposed. The 3D phase object without surface modulation is secure when the scattering is strong enough because it prevents from the interferometric measurement. The identification is implemented by the correlation between a measured speckle pattern of the 3D phase object and stored speckle patterns. For accurate identification, two speckle patterns of the 3D object obtained by illuminating two wavelengths are used. Experimental demonstrations and numerical evaluations of wavelength selectivity are presented.
机译:提出了一种使用具有各种波长读数的3D(3D)随机相位对象进行认证的光学系统。当散射足够强时,没有表面调制的3D相位对象是安全的,因为它可以防止干涉测量。通过在3D相位对象的测量的斑点图案与存储的斑点图案之间的相关性来实现识别。为了精确识别,使用了通过照射两个波长而获得的3D对象的两个散斑图案。提出了波长选择性的实验证明和数值评估。

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