基于高精度波前变换的近眼计算全息三维显示技术研究

Three-dimensional (3D) display technique can provide more depth information for human eyes, which has great value in both industry and research fields. 3D display is one of the hottest research areas in display technology and also has broad prospects in military, medical, entertainment, and manufacturing applications. Holographic 3D display can provide all the depth cues that human vision system can perceive, which is a promising technique to realize true 3D display. This project focuses on the space-bandwidth product limitations of the current computer-generated holographic 3D display systems, and plans to build a near-eye computer-generated holographic 3D display system based on accurate wavefront transformation. Wavefront printing system is introduced to produce the holographic optical element for wavefront transformation according to near-eye 3D display requirements. By efficient coupling from the reconstructed 3D wavefront to human eyes, visual parameters and space-bandwidth product of the system can be optimized, and quality near-eye 3D wavefront in accordance with human visual habits can be reconstructed. Visual parameters and qualities of the computer-generated 3D display system can be improved with the implementation of this project, which would promote the practicality of computer-generated holographic 3D display techniques.

三维显示技术可以为人眼提供丰富的深度信息，有巨大的市场应用价值与科学研究价值，是显示领域的研究热点，并在军事、医疗、娱乐、制造等领域有着广阔的应用前景。全息三维显示技术可以提供人眼视觉系统所需的全部深度感，是实现真三维显示的有效技术方案。本项目针对现有全息三维显示系统的空间带宽积受限问题，拟研究基于高精度波前变换的近眼计算全息三维显示技术，利用波前打印系统制作全息光学元件以实现适合于近眼三维显示需求的高精度波前变换，通过计算全息重建三维波前到人眼的高效耦合，优化系统的视觉参数以及空间带宽积利用率，实现符合人眼视觉习惯的高质量近眼三维波前重建。项目的研究将有效地提高现有计算全息三维显示系统的视觉参数以及视觉效果，并进一步促进计算全息三维显示技术的实用化。