Three-dimensional light field display based on freeform directional backlight

Three-dimensional light field display based on freeform directional backlight

Three-dimensional (3D) display technologies are evolving to deliver immersive and realistic visual experiences featuring with unprecedented viewing flexibility, significantly enhanced image resolution, and substantially enlarged display volume. Since it is still a big challenge to provide sufficient density of resolvable voxels in the display volume, state-of-the-art light field display technologies remain fundamentally limited by unavoidable trade-offs between these key performance parameters. To break through this trade-off, we introduce a miniaturized-voxel light field panel display based on an ultra-slim and large-area freeform directional backlight system. Benefiting from the synergistical design of the directional backlight system and the light control module for voxel construction, we can achieve a wide viewing angle and highly miniaturized voxels, leading to a substantial enhancement in voxel resolution. A 32-inch directional backlight-based prototype with an ultra-slim cabinet depth is presented to validate the proposed display architecture. The prototype provides dynamic 3D visualization with exceptional clarity across a wide viewing angle of 121.8°and a large display volume of 720 mm × 400 mm × 1000 mm.

基于自由曲面定向背光的光场三维显示

三维显示技术正在不断革新以满足用户对观看自由度、图像分辨率和显示体积等关键性能指标的需求，从而提供身临其境的沉浸式视觉体验。然而，由于体素分辨率限制，目前的光场显示技术在这些关键性能参数之间仍存在不可避免的权衡取舍。为了突破这种权衡，我们提出了一种基于超薄大面积自由曲面定向背光系统的压缩体素光场三维显示系统。得益于定向背光系统和体素构建控光模块的协同设计，我们可以在宽广的视角内构建高密度的体素，从而大幅提高体素分辨率。我们研制了一个32英寸的三维显示样机以验证所提出的架构，该样机在实现超薄结构的同时，能够实现高清晰度的动态三维显示，具备121.8°的超宽视角和720mm×400mm×1000mm的超大显示体积。