为了解决观看视角与光学效率的相互制约关系, 设计了一种基于可变孔径针孔阵列的集成成像3D显示器, 建立了3D成像模型, 通过几何光学推导观看视角以及光学效率的计算公式; 详细阐述了如何通过改变透光孔的孔径宽度来调节观看视角以及光学效率; 研制了基于可变孔径针孔阵列的集成成像3D显示样机, 通过液晶显示屏实现电控可变孔径针孔阵列, 通过实验验证了可以通过增大或者减小透光孔的孔径宽度来增大3D图像的亮度或者观看视角。

To resolve mutual restriction of viewing angle and optical efficiency, an integral imaging (II) 3D displayer based on a variable-aperture pinhole array was proposed. The imaging model of the II 3D displayer based on the variable-aperture pinhole array was established. The calculation formulas of the viewing angle and optical efficiency were obtained by using geometrical optics. How to adjust the viewing angle and optical efficiency by changing the aperture width of the pinhole was illustrated in detail. A prototype of the II displayer based on the variable-aperture pinhole array was developed. The variable-aperture pinhole array was electrically controlled by using a liquid crystal display screen. The experimental results prove that the viewing angle and optical efficiency of the 3D image were respectively enhanced by increasing and decreasing the aperture width of pinhole.