State-of-the-art optical see-through head-mounted displays (OST-HMD) for augmented reality applications lack the ability to correctly render light blocking behavior between digital and physical objects, known as mutual occlusion capability. In this article, we present a novel optical architecture for enabling a high performance, occlusion-capable optical see-through head-mounted display (OCOST-HMD). The design utilizes a single-layer, double-pass architecture, creating a compact OCOST-HMD that is capable of rendering per-pixel mutual occlusion, correctly pupil-matched viewing perspective between virtual and real scenes, and a wide see-through field of view (FOV). Based on this architecture, we present a design embodiment and a compact prototype implementation. The prototype demonstrates a virtual display with an FOV of 34° by 22°, an angular resolution of 1.06 arc minutes per pixel, and an average image contrast greater than 40 percent at the Nyquist frequency of 53 cycles/mm. Furthermore, the device achieves a see-through FOV of 90° by 50°, within which about 40° diagonally is occlusion-enabled, and has an angular resolution of 1.0 arc minutes (comparable to a 20/20 vision) and a dynamic range greater than 100:1. We conclude the paper with a quantitative comparison of the key optical performance such as modulation transfer function, image contrast, and color rendering accuracy of our OCOST-HMD system with and without occlusion enabled for various lighting environments.

中文翻译：

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具有瞳孔匹配遮挡功能的光学透视可穿戴显示器的设计


用于增强现实应用的最先进的光学透视头戴式显示器 (OST-HMD) 缺乏正确渲染数字和物理对象之间的光阻挡行为的能力，即相互遮挡能力。在本文中，我们提出了一种新颖的光学架构，用于实现高性能、具有遮挡功能的光学透视头戴式显示器 (OCOST-HMD)。该设计采用单层、双通道架构，创建紧凑的 OCOST-HMD，能够渲染每像素相互遮挡、虚拟和真实场景之间正确的瞳孔匹配观看视角，以及宽广的透视视野。视图（FOV）。基于该架构，我们提出了一个设计实施例和一个紧凑的原型实现。该原型展示了一个虚拟显示器，其视场角为 34° x 22°，角分辨率为每像素 1.06 角分，在奈奎斯特频率为 53 周期/毫米时，平均图像对比度大于 40%。此外，该设备实现了 90° x 50° 的透视视场，其中对角线约 40° 具有遮挡功能，并且具有 1.0 弧分的角度分辨率（相当于 20/20 视觉）和动态范围大于100:1。我们对 OCOST-HMD 系统在各种照明环境下启用和不启用遮挡的情况下的关键光学性能（例如调制传递函数、图像对比度和色彩渲染精度）进行了定量比较，从而结束了本文。