Space-Time Multiplexed Natural Three-Dimensional Display

为了降低用于高密度定向(HDD)显示器的多投影系统的复杂性，提出了一种采用时分复用技术的新型高密度定向(HDD)显示器。HDD显示器是一种自然的三维显示器，它是为了解决因适应-聚光冲突而导致的视觉疲劳问题而开发的。所提出的HDD显示器由多个时分复用显示模块组成。每个模块由LED阵列、DMD、透镜和光圈阵列组成。DMD以高帧速率显示多个方向图像，LED与DMD同步一个接一个地发光。这些孔是二维排列的，它们的水平位置是不同的。LED的排列方式相同。DMD显示的所有方向图像都通过不同的光圈。多个模块以不同的水平位置二维排列，所有图像通过一个共同的镜头组合。采用垂直漫射器作为显示屏，消除垂直显示方向的差异。所有方向图像叠加在垂直漫射器上，并被赋予不同的水平显示方向。每个模块以60赫兹的帧速率生成15个方向图像。四个模块组合在一起，在不同的水平方向上显示60幅方向图像，角度间距为0.31°。

The new high-density directional (HDD) display using the time-multiplexing technique is proposed to reduce the complexity of the multi-projection system used for the HDD display. The HDD display is a natural three-dimensional display which has been developed to solve the visual fatigue problem caused by the accommodation-vergence conflict. The proposed HDD display consists of multiple time-multiplexing display modules. Each module consists of an LED array, a DMD, lenses, and an aperture array. A number of directional images are displayed by the DMD at a high frame rate and the LED's emit light one after another in synchronization with the DMD. The apertures are arranged two-dimensionally, and their horizontal positions are different. The LED's are arranged in a same way. All directional images displayed by the DMD pass through different apertures. Multiple modules are arranged two-dimensionally with the different horizontal positions and all images are combined by a common lens. A vertical diffuser is used as a display screen to cancel the difference of the vertical display directions. All directional images are superimposed on the vertical diffuser, and are given the different horizontal display directions. Each module generates 15 directional images at a frame rate of 60 Hz. Four modules are combined to display 60 directional images in the different horizontal directions with the angle pitch of 0.31°.