Glasses-free three-dimensional (3D) displays are one of the game-changing technologies that will redefine the display industry in portable electronic devices. However, because of the limited resolution in state-of-the-art display panels, current 3D displays suffer from a critical trade-off among the spatial resolution, angular resolution, and viewing angle. Inspired by the so-called spatially variant resolution imaging found in vertebrate eyes, we propose 3D display with spatially variant information density. Stereoscopic experiences with smooth motion parallax are maintained at the central view, while the viewing angle is enlarged at the periphery view. It is enabled by a large-scale 2D-metagrating complex to manipulate dot/linear/rectangular hybrid shaped views. Furthermore, a video rate full-color 3D display with an unprecedented 160° horizontal viewing angle is demonstrated. With thin and light form factors, the proposed 3D system can be integrated with off-the-shelf purchased flat panels, making it promising for applications in portable electronics.

裸眼 3D (3D) 显示器是改变游戏规则的技术之一，它将重新定义便携式电子设备的显示行业。然而，由于最先进的显示面板的分辨率有限，当前的 3D 显示器在空间分辨率、角分辨率和视角之间存在关键权衡。受脊椎动物眼睛中所谓的空间变异分辨率成像的启发，我们提出了具有空间变异信息密度的 3D 显示。在中心视图保持平滑运动视差的立体体验，而在外围视图放大视角。它由大规模 2D 元光栅复合体启用，以操纵点/线性/矩形混合形状的视图。此外，展示了具有前所未有的 160° 水平视角的视频速率全彩 3D 显示器。由于外形轻薄，建议的 3D 系统可以与现成的购买平板集成，使其有望用于便携式电子产品。