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Optical performance of coherent and incoherent imaging systems in the presence of ghost images

机译：存在重影时相干和非相干成像系统的光学性能

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摘要

Ghost image analysis is of interest for optical designers as ghost images may degrade image quality in imaging systems. In a previous paper by Abd El-Maksoud and Sasian [Appl. Opt. 50, 2305 (2011)], ghost image analysis for incoherent systems was evaluated using geometrical optics. Some criteria were presented to identify focused ghost images at the nominal image plane. The main goal of this paper is to provide a conceptual understanding of ghost image formation and its impact on the performance of imaging systems using wave theory and Fourier optics. To achieve this goal, a methodology is developed to model ghost images after considering diffraction effects. Expressions for the ghost diffraction point spread function and the ghost transfer function are presented. These functions are used to construct effective point spread and effective transfer functions. To provide insights on the developed theory, some simulation examples are provided and discussed.
机译：幻影图像分析对于光学设计人员来说很重要，因为幻影图像可能会降低成像系统中的图像质量。在Abd El-Maksoud和Sasian的先前论文中[Appl。选择。 50，2305（2011）]，使用几何光学技术评估了非相干系统的重影分析。提出了一些标准来识别名义图像平面上的聚焦重影。本文的主要目的是通过波理论和傅立叶光学原理，对重影图像的形成及其对成像系统性能的影响提供一个概念性的理解。为了实现该目标，开发了一种在考虑衍射效应后对重影图像建模的方法。给出了幻影衍射点扩展函数和幻影传递函数的表达式。这些函数用于构造有效点扩展和有效传递函数。为了提供有关已发展理论的见解，提供并讨论了一些仿真示例。

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