基于非均匀棱镜阵列的三维集成成像视角增强方法

针对传统集成成像系统视角受限于单元透镜尺寸及其焦长的问题,提出了一种基于非均匀棱镜阵列的三维集成成像视角增强方法。以传统集成成像重构显示原理为基础,借助于非均匀棱镜阵列对重构光线的偏转作用,设计了显示透镜阵列和非均匀棱镜阵列组合的立体显示模式。依据集成成像的三维重构显示原理,利用光线追迹理论,导出了非均匀棱镜阵列的结构参数和集成成像系统视角之间的关系模型。仿真实验表明,基于非均匀棱镜阵列的集成成像系统视角比传统集成成像系统有了显著提高。

Wide-viewing angle integral imaging system with a non-uniform prism array

In conventional integral imaging,the viewing angle is limited by the pitch and focal length of element lens of the lens array.In this regard,a three-dimensional integral imaging di splay system with non-uniform prism array placed in front of the display lens array is proposed to realize a wide vi ewing angle for the three-dimensional reconstructed image.The size and shape of element prism of the non-uniform pri sm array are the same to those of the element lens of display lens array.In our scheme,based on the display principle of conventiona l integral imaging,a three-dimensional integral imaging display model with lens array and non-unifo rm prism array is designed theoretically by using the deflection ability of non-uniform prism array to the reconstruction light.The optical property of non-uniform prism array is analyzed from the point of integral imag ing.A comparison of the viewing angle property between the conventional integral imaging and the propose d method is made.In addition,based on the reconstruction principle of an integral imaging system,the ray tracing t heory is utilized to derive the quantitative relationship model between the structure parameters of the non-uni form prism array and the viewing angle of the integral imaging system.Finally,the simulation results s how that the viewing angle of the proposed method has been significantly improved compared with the conventional i ntegr al imaging system.