集成成像近眼显示传输链路建模与可视参数协同提升方法研究

True three-dimensional (3D) representation is an inevitable development trend of near-eye display technology. In this proposal, considering the integral imaging (II) display chain and human visual system as a unified whole, the spatial-angular distribution of the reconstructed light field and the features of reconstructed voxel of II is dissected and a transmission chain model is constructed for true 3D near-eye II display mode. Based on the transmission chain model, combined with near-eye II optical system design and 3D display information processing methods, the global optimization design method of near-eye II display system is explored to reduce the information redundancy of the display chain. The spatial distribution of the elemental image array is modulated by tunable array optical device to achieve collaborative promotion of multiple visual parameters, taking advantage of the variable resolution visual perception of human eyes. The research result will provide theoretical and technical support for near-eye II display, and promote the practical development of 3D II display technology in the field of near-eye display.

真三维再现是近眼显示技术的必然发展趋势，本项目拟针对集成成像近眼真三维显示模式，将集成成像显示光学链路和人眼视觉系统看作统一整体，剖析再现光场的空间-角度分布特性与集成成像再现体素特征，构建集成成像近眼显示传输链路模型；以显示传输链路模型为基础，结合集成成像近眼显示光学系统设计与三维显示信息处理方法，探索集成成像近眼显示系统全局优化设计方法，减小显示信息传递链路的信息冗余；结合视觉变分辨率感知特性，基于可调谐阵列光学器件调制单元图像阵列的空间分布，实现集成成像近眼显示可视参数协同提升技术。本项目的研究将为集成成像近眼显示提供理论与技术支持，推动集成成像三维显示技术在近眼真三维显示方面的实用化发展。

本项目针对集成成像近眼显示模式，围绕显示信息传输链路模型构建与优化、再现显示质量提升展开研究。（1）研究了基于多高斯光束非相干叠加的近眼显示传输链路建模方法，建立了显示设备到视网膜的光斑传输计算模型；（2）研究了基于瞳孔面视点调控的近眼显示方法，采用衍射分束器与孔径分割，实现瞳孔面视点分布精确调控，分析了瞳孔面视点分布对视网膜感知图像的影响；（3）围绕基于偏振复用机制的集成成像近眼显示质量提升方法，研究了基于双焦超透镜阵列的参数可切换集成成像近眼显示方法，给出了配置可切换超透镜阵列设计方法；（4）探索了基于偏振态调控的介质超透镜连续调焦方法，讨论了基于偏振调控的超透镜调焦性能及影响因素；（5）在上述基础上，进一步探索了基于超单元结构的偏振选择性超透镜设计方法，推导了超单元结构对光传输的调制特性，针对单层介质超透镜，分析了几何相位与传输相位对圆偏振选择性和聚焦特性的影响。本项目的研究可为集成成像近眼显示系统优化设计、显示质量提升提供理论支撑与技术支持。