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Aberration-Based Quality Metrics in Holographic Lenses

机译:全息镜头中基于像差的质量指标

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摘要

Aberrations and the image quality of holographic lenses were evaluated by a Hartmann–Shack (HS) wavefront sensor. Two lenses, one recorded with a symmetrical configuration and the other with an asymmetrical one, were stored in a photopolymer called Biophotopol. Each was reconstructed with two different wavelengths, 473 nm and 633 nm. Different metrics were applied to determine and quantify the aberration of the lenses (Zernike coefficients, Seidel coefficients, Marechal tolerances, root-mean-square (RMS), peak to valley, critical fraction of the pupil), and the quality of the image they provided (Strehl ratio, entropy, cutoff frequency, modulation transfer function (MTF), and area under the MTF). Good agreement between the metrics related to optical quality was obtained. The negative asymmetric holographic lenses had less aberration than the positive symmetric ones.
机译:全息透​​镜的像差和图像质量通过Hartmann-Shack(HS)波前传感器进行评估。将两个透镜(一个记录为对称配置,另一个记录为不对称配置)存储在称为Biophotopol的光敏聚合物中。每个都用两个不同的波长473 nm和633 nm重建。应用了不同的指标来确定和量化镜片的像差(Zernike系数,Seidel系数,Marechal公差,均方根(RMS),峰谷,瞳孔的临界分数)以及它们的图像质量提供(斯特列尔比,熵,截止频率,调制传递函数(MTF)和MTF下的面积)。在与光学质量有关的度量之间获得了良好的一致性。负非对称全息透镜的像差小于正对称全息透镜。

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