Abstract. We present an optical set up that significantly reduces the ghost images appearing due to multiple reflections on both surfaces of the combiner (typically the windshield) of head-up display (HUD) systems. The method is based on an optimized polarization correcting optics attached to the HUD projector. For the quantitative investigation of the ghost images, we calculate the ghost image suppression ratio as a function of viewing direction using a custom algorithm based on ray tracing and Jones-vector formalism. We also present experimental results on the proposed configurations exhibiting very good agreement with calculation results. As a result, the ghost image free viewing area of polarization-type HUDs can be increased more than fourfold.

中文翻译：

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消除扩展视角平视显示系统中的重影

摘要。我们提出了一种光学装置，可显着减少由于平视显示器 (HUD) 系统的组合器（通常是挡风玻璃）的两个表面上的多次反射而出现的重影。该方法基于连接到 HUD 投影仪的优化偏振校正光学器件。为了定量研究鬼影，我们使用基于光线追踪和琼斯矢量形式的自定义算法计算鬼影抑制率作为观察方向的函数。我们还展示了与计算结果非常吻合的拟议配置的实验结果。因此，偏振型 HUD 的无重影可视区域可以增加四倍以上。