A compact augmented reality (AR) combiner using Pancharatnam-Berry phase (PBP) lens and holographic optical element (HOE) is proposed. PBP lens is activated as a convex lens or a concave lens according to the polarization state of the input light wave. By using this characteristic, a thin AR eyepiece with a large numerical aperture (NA) is constructed. The AR eyepiece operates as a convex lens for the input light with a right-handed circular polarization state and operates as a transparent plate for the left-handed circularly polarized light. In order to adopt this AR eyepiece to the AR combiner, a chromatic aberration should be compensated. To resolve the chromatic aberration, HOE which diffracts the light rays with different profiles according to the input wavelength is designed. By combining this HOE with the AR eyepiece and a light guide, a compact AR combiner providing a wide field of view (FOV) is designed. A prototype of the proposed AR combiner is presented along with experimental results and analysis.

中文翻译：

---

使用 Pancharatnam-Berry 相位透镜的紧凑型增强现实组合器

提出了一种使用 Pancharatnam-Berry 相位 (PBP) 透镜和全息光学元件 (HOE) 的紧凑型增强现实 (AR) 组合器。PBP 透镜根据输入光波的偏振状态被激活为凸透镜或凹透镜。利用这一特性，构建了具有大数值孔径 (NA) 的薄型 AR 目镜。AR 目镜对于右旋圆偏振态的输入光起到凸透镜的作用，对于左旋圆偏振光则起到透明板的作用。为了将该AR目镜用于AR组合器，需要补偿色差。为了解决色差问题，设计了根据输入波长衍射不同轮廓光线的HOE。通过将这个 HOE 与 AR 目镜和光导相结合，设计了提供宽视场 (FOV) 的紧凑型 AR 组合器。提出的 AR 组合器的原型以及实验结果和分析。