Kim Minkwan, Lee Seungjae, Jo Youngjin, Lee Siwoo, Lee Byoungho
Opt Lett. 2021 Sep 1;46(17):4176-4179. doi: 10.1364/OL.435851.
We propose a compact tomographic near-eye display by combining a micro-electro-mechanical systems (MEMS) scanning mirror device, focus tunable lens, and a single light-emitting diode source. A holographic optical element was used to elaborately focus the light source into the MEMS scanning mirror while providing further miniaturization. We implemented a drastically downsized multifocal display system that expresses a depth range of 4.8 D with eight focal planes by synchronizing these modules. Furthermore, the planar images are optimized to achieve correct retinal scenes at each accommodation state. The simulated and experimental results verify that the suggested near-eye display system can provide three-dimensional virtual images while showing physical feasibility.
我们提出了一种紧凑型断层扫描近眼显示器，它结合了微机电系统（MEMS）扫描镜装置、焦点可调透镜和单个发光二极管光源。使用全息光学元件将光源精确聚焦到MEMS扫描镜中，同时实现进一步小型化。通过同步这些模块，我们实现了一个大幅缩小尺寸的多焦点显示系统，该系统通过八个焦平面来呈现4.8 D的深度范围。此外，平面图像经过优化，以在每个调节状态下实现正确的视网膜场景。模拟和实验结果验证了所提出的近眼显示系统在显示物理可行性的同时能够提供三维虚拟图像。
