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Effect of spherical aberration in trefoil phase plates on color wavefront coding

机译：三叶相板中球差对彩色波前编码的影响

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摘要

Wavefront coding is a technique that makes use of aspheric phase masks and image processing to greatly increase the depth of focus and/or reduce the cost of imaging systems. The phase mask adds a controlled amount of aberrations to the optical system in such a way that invariant imaging properties are achieved over a wide range of defocus. When aspheric phase plates are fabricated, their shape has to be carefully designed to avoid introducing other aberrations into the optical system, which could reduce its performance. In this work, we will show how inherent spherical aberration for trefoil-shaped phase plates reduces the quality of color images. Results will be illustrated with numerical simulations. We will show that a fourth-order polynomial added to a trefoil shaped phase mask can avoid the plate generating undesired spherical aberration that will affect the final quality of the decoded color images. (C) 2018 The Japan Society of Applied Physics
机译：波前编码是一种利用非球面相位掩模和图像处理来大大增加聚焦深度和/或降低成像系统成本的技术。相位掩模以使在大范围的散焦范围内实现不变的成像特性的方式向光学系统添加受控量的像差。在制造非球面相位板时，必须仔细设计其形状，以避免将其他像差引入光学系统，这可能会降低其性能。在这项工作中，我们将展示三叶形相位板固有的球差如何降低彩色图像的质量。结果将通过数值模拟进行说明。我们将显示，将四阶多项式添加到三叶形相位掩模中，可以避免印版产生不希望的球差，球差会影响解码后的彩色图像的最终质量。 （C）2018日本应用物理学会

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  • 来源
    《Japanese journal of applied physics》 |2018年第8s2期|08PF05.1-08PF05.5|共5页
  • 作者

    Olvera-Angeles Miguel; Padilla-Vivanco Alfonso; Sasian Jose; Schwiegerling Jim; Arines Justo; Acosta Eva;

  • 作者单位

    Univ Politecn Tulancingo, Tulancingo 43629, Hidalgo, Mexico;

    Univ Politecn Tulancingo, Tulancingo 43629, Hidalgo, Mexico;

    Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA;

    Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA;

    Univ Santiago de Compostela, Fac Fis, Dept Fis Aplicada, Santiago De Compostela 15782, Spain;

    Univ Santiago de Compostela, Fac Fis, Dept Fis Aplicada, Santiago De Compostela 15782, Spain;

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