Volumetric 3D Display Based on Switchable Binary Optic Element Array

物理光学公司提出了一种新的实时真3D（体积）显示，基于可切换的二元光学元件（SBOE）。在这里，表面印刷二元光学元件（BOE）的2D阵列涂覆有覆盖整个BOE阵列的快速切换液晶层。这种阵列的堆叠形成显示器的体积介质。每个BOE，形成一个体积像素（体素）元素，可以快速打开和关闭，而3色（RGB）低功率激光束扫描整个显示体积。当处于未切换状态时，介质将是透明的，而在切换状态下，扫描激光束将从切换的体素元件衍射成圆锥形状。为了产生3D图像，扫描激光束在BOE平面上扫描时被调制，BOE平面在整个堆叠上顺序切换。使用快速开关铁电液晶和声光调制器和光束偏转器，可以实现实时，无闪烁的3D体积显示，而无需任何移动部件。这项研究将调查所提出的概念的可行性，并奠定了基础，为商业应用开发一个独特的体积3D显示。

Physical Optics Corporation proposes a new real-time true 3D (volumetric) display, based on switchable binary optical elements (SBOEs). Here, a 2D array of surface printed binary optical elements (BOEs) are coated with a rapidly switchable liquid crystal layer covering the entire BOE array. A stack of such arrays form the volume medium of the display. Each BOE, which forms a volume pixel (voxel) element, can be rapidly switched on and off, while a 3 color (RGB) low power laser beam is scanned across the display volume. When in an unswitched state, the medium will be transparent, while in a switched state, the scanning laser beam will be diffracted into a cone shape from the switched voxel elements. In order to produce a 3D image, the scanned laser beam is modulated while scanned over the BOE plane, which is sequentially switched over the whole stack. Using a fast switching Ferroelectric liquid crystal and acoustic optic modulators and beam deflectors, a real-time, flicker-free 3D volume display can be achieved without any moving parts. This research will investigate the feasibility of the proposed concept and lay the groundwork for the development of a unique volumetric 3D display for commercial applications.