在LED集成成像裸眼三维显示中, LED大屏幕的单个像素点的发散角很大, 使用平凸及双凸透镜, 图像的重构光线发散且相邻透镜单元间的像素串扰大, 导致立体场景再现的过程中图像不清晰, 影响重构三维图像的质量。根据光线追迹原理, 分析了LED集成成像的成像过程, 研究不同形状透镜阵列与LED集成成像相邻透镜单元间像素点间串扰的关系, 仅使用单个凹凸透镜有效地控制了重构光线的发散问题, 使通过透镜的重构光线更加汇聚准直, 光线平行出射, 有效地减小了相邻透镜间的像素串扰, 提高了成像质量。通过比较字母模型成像的仿真结果, 凹凸透镜非常适用于LED集成成像, 成像的效果优于其他形状透镜。

In the integrated imaging naked eye 3D display based on LED, the divergence angle of the pixel point of LED large screen was very large. Flat convex and double convex lens are often employed. The reconstructed light of the image diverges and the pixel crosstalk between adjacent lens units was large, resulting in unclear images during the reproduction of the three-dimensional scene with the reduced imaging quality. The imaging process of integrated imaging based on LED was analyzed according to the principle of ray tracing. The relationship of crosstalk between different shapes of the lens array and adjacent lens units of LED integrated imaging was investigated. A single meniscus lens was used to effectively control the divergence of the reconstructed light. The reconstructed light passing through the lens was more convergent and collimated. The emergent rays through the lens becomes more parallel and the crosstalk between adjacent lens units was reduced effectively. By comparing the simulation result of the letter model, the meniscus lens was more suitable for LED integrated imaging. The imaging effect of the meniscus lens is better than that of the other lens.