利用发光二极管(LED)的高速发光特性,以旋转的二维发光二极管阵列为显示载体,通过时分寻址电路快速显示三维形体的二维截面序列。受调制的离散二维图像信息,因视觉暂留而形成深度效应,将被整合感知为一幅连续的三维图像。成功实现了具有49152个体像素,尺寸为φ144.6 mm×110 mm的柱体空间内的三维显示,图像具有双目视差、调节、会聚等常规视差信息,能提供真实的深度暗示,可同时从任意角度直接观察。论述了系统的显示原理及图像编码分解方法,分析和讨论了显示质量与体像素优化选取、起始位置显示信息的关联程度。

A three-dimensional volumetric display system utilizing a rotating panel is described. The LEDs are arranged in a matrix configuration on the panel. They can be addressed by control circuit to create a sequence of two-dimensional image information at a predefined interval. These discrete images will be perceived and interpreted as an integrated three-dimensional image due to eye persistence. The system can provide 49152 voxels in a cylinder display space with a diameter of 144 mm and a height of 110 mm. The three-dimensional image displayed provides viewers with true depth cues, binocular parallax, accommodation and convergence, etc., and can be observed from any directions horizontally without the need for any special viewing aids. The structure, principle of displaying method and the volumetric information encoding are discussed. Moreover, the relationship between quality of display, optimization of selection of voxels and initial image information displayed are analyzed in detail.