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Thin Stereoscopic Display Device with Microlens Array and Micro Scanner

具有微透镜阵列和微型扫描仪的薄型立体显示装置

基本信息

批准号：
13355010
负责人：
SHIMOYAMA Isao
金额：
$ 32.7万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2004
项目状态：
已结题

项目摘要

In this project, we researched on the transmissive multi-view stereoscopic display. There is a trade-off between the resolution and the number of images in existing multi-view stereoscopic displays. In order to solve this problem, we propose the way of projecting time-series pixel data into the discrete directions by scanning micromirrors. As the number of the view angles depends on the number of pixel data projected in one cycle of the scan, the resolution and the number of the view angles can be independently increased. In the system using reflective micromirror array like a DMD(Digital Micromirror Device), the mirror array and the light source are generally placed opposite because of a certain length of the light path. On the other hand, as the ray from the underneath display comes through upwards by being reflected twice in our method, the stereoscopic display can be made up thinly and compactly by mounting this array on the 2-D displays.We designed and fabricated the micromirrors actuated by combination of external magnetic force and Lorentz force. The mirror surface is 400 x 500 μm^2, and the thickness is 20 μm. We confirmed the principle of the multi-view display by scanning the laser beam which was reflected by a pair of micromirrors, a fixed mirror and a vibrating mirror. Next, Fabricated micromirrors, microlens array and an LED matrix were integrated into a prototype of the transmissive multi-view stereoscopic display. The relationship between the view angle and the brightness was measured on some conditions. The high feasibility of the multi-view stereoscopic display was proved from these relationships. As both the resolution and the number of the view angles can be increased in our method, a thin multi-view stereoscopic display can be made by integrating this prototype on a large scale.

在本项目中，我们对透射式多视点立体显示进行了研究。在现有的多视点立体显示器中，在分辨率和图像数量之间存在权衡。为了解决这一问题，我们提出了通过扫描微镜将时间序列像素数据投影到离散方向的方法。由于视角的数量取决于在一个扫描周期中投射的像素数据的数量，因此可以独立地增加分辨率和视角的数量。在使用像DMD(数字微镜设备)这样的反射式微镜阵列的系统中，由于光路的一定长度，反射镜阵列和光源通常被放置在相反的位置。另一方面，由于在我们的方法中，来自显示器下面的光线通过两次反射向上射出，因此将该阵列安装在二维显示器上可以构成薄而紧凑的立体显示器。我们设计并制作了外加磁力和洛伦兹力相结合的微镜。镜面为400×500μm^2，厚度为20μm，通过扫描一对微镜、一个固定镜和一个振动镜反射的激光，确定了多视点显示的原理。然后，将制作的微镜、微透镜阵列和LED矩阵集成到透射式多视点立体显示器的原型中。在一定条件下测量了视角与亮度的关系。从这些关系中证明了多视点立体显示的高度可行性。由于我们的方法可以提高分辨率和视角数，因此可以通过大规模集成该样机来制作薄型多视点立体显示器。