Retinal 3D: Augmented Reality Near-Eye Display Via Pupil-Tracked Light Field Projection on Retina
Retinal 3D: Augmented Reality Near-Eye Display Via Pupil-Tracked Light Field Projection on Retina
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DOI：
10.1145/3130800.3130889
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发表时间：
2017-11-01
影响因子：
6.2
通讯作者：
Lee, Byoungho
中科院分区：
文献类型：
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作者：
Jang, Changwon;Bang, Kiseung;Lee, Byoungho
我们介绍了一种名为“视网膜3D”的增强现实近眼显示器。所提出的显示系统的主要特征如下：通过产生可以直接投射到视网膜上的瞳孔跟踪光场来提供焦点提示。生成的聚焦提示在大深度范围内有效，因为激光光束针对大景深(DOF)进行整形。光瞳跟踪光场生成显著减少了所需的信息/计算负荷。此外，它还提供了可以突破视网膜投影型显示器缺点的“动态眼盒”。在实现上，我们使用了全息光学元件(HOE)作为图像合成器，它以薄的结构实现了高透明度。与目前的增强现实显示器相比，该系统在大视场、高透明度、高对比度、高分辨率以及大深度范围内的聚焦提示等方面表现出了极具竞争力的性能。文中给出了两个样机以及实验结果和评估。对光线的自由度进行了分析，并给出了聚焦线索生成的有效性。瞳孔跟踪和先进的近眼显示技术的结合为未来的增强现实开辟了新的可能性。
We introduce an augmented reality near-eye display dubbed "Retinal 3D." Key features of the proposed display system are as follows: Focus cues are provided by generating the pupil-tracked light field that can be directly projected onto the retina. Generated focus cues are valid over a large depth range since laser beams are shaped for a large depth of field (DOF). Pupil-tracked light field generation significantly reduces the needed information/computation load. Also, it provides "dynamic eye-box" which can be a break-through that overcome the drawbacks of retinal projection-type displays. For implementation, we utilized a holographic optical element (HOE) as an image combiner, which allowed high transparency with a thin structure. Compared with current augmented reality displays, the proposed system shows competitive performances of a large field of view (FOV), high transparency, high contrast, high resolution, as well as focus cues in a large depth range. Two prototypes are presented along with experimental results and assessments. Analysis on the DOF of light rays and validity of focus cue generation are presented as well. Combination of pupil tracking and advanced near-eye display technique opens new possibilities of the future augmented reality.