论文标题
纳米级3D打印的高分辨率光场打印
High-resolution light field prints by nanoscale 3D printing
论文作者
论文摘要
光场打印（LFP）在环境白光照明下向裸眼观察者显示三维（3D）的信息。观察者从不同的角度可以看到3D图像的变化观点。但是，由于分辨率有限和镜头和颜色像素之间的分辨率有限，LFP似乎是像素化的。创建高分辨率LFP的有前途的解决方案是使用高级纳米化技术。在这里，我们将两光子聚合光刻作为一步纳米级3D打印机，直接用透明树脂制造LFP。这种方法同时产生高空间分辨率（29-45μm）和高角度分辨率（〜1.6°）图像，并在15 {\ times} 15视图中具有平滑运动的平均值。值得注意的是，最小的颜色像素仅由单个纳米（〜300 nm直径）组成。我们的LFP表示迈向超现实的3D图像的一步，该图像可用于高价值商品的印刷媒体和安全标签。
A light field print (LFP) displays three-dimensional (3D) information to the naked-eye observer under ambient white light illumination. Changing perspectives of a 3D image are seen by the observer from varying angles. However, LFPs appear pixelated due to limited resolution and misalignment between their lenses and colour pixels. A promising solution to create high-resolution LFPs is through the use of advanced nanofabrication techniques. Here, we use two-photon polymerization lithography as a one-step nanoscale 3D printer to directly fabricate LFPs out of transparent resin. This approach produces simultaneously high spatial resolution (29 - 45 μm) and high angular resolution (~ 1.6 °) images with smooth motion parallax across 15 {\times} 15 views. Notably, the smallest colour pixel consists of only a single nanopillar (~ 300 nm diameter). Our LFP signifies a step towards hyper-realistic 3D images that can be applied in print media and security tags for high-value goods.
