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首页> 外文期刊>Applied optics >Selective color imaging using weighted interleaved multiple annular linear diffractive axicons
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Selective color imaging using weighted interleaved multiple annular linear diffractive axicons

机译：使用加权交错的多个环形线性衍射轴锥的选择性彩色成像

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摘要

Annular linear diffractive axicons are optical devices providing chromatic imaging over an extended depth of focus when illuminated by a white light. To improve their low radiometric performance, multiple annular linear diffractive axicons (MALDAs) have been introduced. Their chromatic properties are well known and constrained by dispersion laws. A first attempt to freely combine colors or wavelength bands has been obtained with interleaved MALDAs (I_MALDAs). However, such optics do not provide a full decoupling between wavelength combination and brightness control required in the CIE color space to address any colors. We present here a new category of I_MALDA providing this capability when illuminated by a white source containing tristimulus (red/green/blue) values. We assess both theoretically and experimentally imaging qualities of such optics with respect to two different interleaving techniques and suggest some potential applications, in particular in the field of anticounterfeit and authentication techniques.
机译：环形线性衍射轴锥是一种光学设备，当被白光照射时，可以在扩展的焦点深度上提供彩色成像。为了改善其低辐射性能，已经引入了多个环形线性衍射轴锥（MALDA）。它们的色性质是众所周知的，并受色散定律的约束。使用交错的MALDA（I_MALDA）已经获得了自由组合颜色或波段的首次尝试。但是，此类光学器件无法在CIE颜色空间中满足任何颜色所需的波长组合和亮度控制之间提供完全的解耦。我们在此介绍一种新的I_MALDA类别，当被包含三刺激（红色/绿色/蓝色）值的白色光源照射时，I_MALDA提供了此功能。我们针对两种不同的交织技术评估了这种光学器件的理论和实验成像质量，并提出了一些潜在的应用，特别是在防伪和认证技术领域。

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