A 3D Floating Image System Design with Flat-Form Optical

• Main Authors: Yu, Zih-Sin, 游子馨
• Other Authors: Shieh, Han-Ping David
• Format: Others
• Language: en_US
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/p6ukhk

碩士 === 國立交通大學 === 光電工程研究所 === 106 === As the progress of technology, display technology improves every day. In the preliminary, there were just 2D displays, but only took few decades, various 3D display technologies contend for attention. In recent years, the applications of 3D display technologies are practicable and comprehensive. For examples, some kinds of display use light barrier to block right eye signal to left eye, and block left eye signal to right eye, which makes two eyes receive different light signal to blend into 3D images. Other kinds use diffuser of cone appearance to diffuse light in vertical direction but keep the discontinuity in horizontal direction, which let users view images of horizontal parallax. These technologies provide images similar to real objects, which gives users a virtual feeling as if it were really happening in movies or computer games. However, to enhance the reality of 3D images, the main factors, depth of view, magnitude of viewing angle, and the continuity of images in viewing angle, are needs to consider. In some displays, the viewing angle just includes small segment in normal direction of display, and images merely emerge 1 cm in front of the screen, which severely weakens the stereo vision and depresses users. The 3D floating display systems generate 3D images floating in the air, and viewing angle are able to get to360 degrees, which mends the issues arising from depth of view and small viewing angle, and further it can enhance image quality. In this study, a floating image display system on account of imaging principle of one-dimensional integral image with horizontal parallax is proposed. In the system, we use multiple micro projector as light source of horizontal parallax system. Each micro projector counts for a portion of viewing angle in azimuthal direction of 360 degrees. On the above of projector layer, we pile up pinhole layer and toroidal lens layer, and the two optical films play the function of rearranging light from projectors. After light passes through them, users move in azimuthal direction are able to see floating image with smooth horizontal parallax.