Tabletop integral imaging 3D display system based on annular point light source |
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| Affiliation: | 1. College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China;2. College of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China;1. The Institute of Image Communication and Network Engineering, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Visbody Inc, Shenzhen 518000, China;1. Department of Information and Communications, Pukyong National University, 599-1, Daeyeon 3-Dong, Nam-Gu, Busan, Republic of Korea;2. Department of Applied Mathematics, Pukyong National University, 599-1, Daeyeon 3-Dong, Nam-Gu, Busan, Republic of Korea;1. Bionic Vision System Laboratory, State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China;4. Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China;5. School of Information and Technology, ShanghaiTech University, Shanghai 200050, China |
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| Abstract: | When the viewers sitting around the table observe 3D images, the viewing direction is generally oblique and the viewpoints should be distributed as annular. In this paper, a tabletop integral imaging (II) three-dimensional (3D) display system based on annular point light sources is demonstrated, which can present 3D images to multiple viewers in a standard annular viewing area with oblique viewing direction. The proposed system consists of annular point light sources, a Fresnel lens, a lens array, a two-dimensional (2D) display panel, and a diffuser screen. Each point light source illuminates the Fresnel lens to form parallel light and then illuminates the lens array and the display panel. A viewing sub-area is generated at the position of the diffuser screen, in which the 3D images can be viewed. Multiple viewing sub-areas are created in a way of time-division multiplexing to form a 360° annular viewing area. Compared with the previous tabletop 3D display, the viewing area can be concentrated at an oblique angle near the tabletop. The experimental results demonstrate the feasibility of the tabletop II 3D display system. |
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| Keywords: | Integral imaging Tabletop display Annular point light sources Viewing area |
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