针对集成成像三维再现像的视场角较窄, 实用化受限的问题,提出了一种拓展集成成像视场角的新方法,并基于多级投影技术构建了具有大视场角的三维集成成像系统。该系统利用多个投影仪并联投射不同级次的元素图像阵列并进行三维重构来获得大视场角的集成成像再现像。与传统的集成成像视场角拓展技术相比, 所提方法具有系统结构简单、无需场镜等辅助光学器件; 系统中没有机械运动, 不会产生振动和噪声; 以及可用于大尺寸集成成像显示系统的优点。光学实验结果表明, 提出的多级投影式集成成像显示系统的再现像视场角为±35°, 是传统的集成成像系统获得的视场角的2.92倍, 明显拓展了视场角。

As integral imaging has narrower viewing angles for three-dimensional reconstruction images, it can not be widely applied in three-dimensional display. To enhance the viewing angles of integral imaging, this paper develops a new three-dimensional integral imaging system with a larger view angle based on the multi-level projection technology. The system projects the element image array with different levels in parallel based on multi-projectors and obtains a construction image with a large viewing angle by three dimensional reconstruction. As compared with the conventional method with multi-axles, the proposed method has the advantages on its simply structure without other field lenses and stable system no vibration and noises. Furthermore, it is suitable for the large-scale integral imaging system. The optical experiment shows that the viewing angle of proposed integral imaging system with multi-projectors is ±35°, which is 2.92 times that of the conventional integral imaging system and enhances the viewing angle greatly.