14 April 2010 Digital holographic display
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Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75225S (2010) https://doi.org/10.1117/12.852468
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore
Abstract
This paper describes how a Digital Holographic Projector is designed and implemented to project two-dimension virtual images onto the volumetric display media. In this research, we focus on the method to create 3D models, diffractive algorithm and the display media. A 3D model is generated based on the 360° view with views at every 10° interval from a 3D perspective view software. The hologram interference fringes are re-producing from the Fraunhofer algorithm. In order to make more flexible and portable, a Compact Vision System is introduced to storage multiply interference fringes. At the same time, the fringes are sent out at 30 Hz frame by frame continually to the digital micro-mirror1. With the presence of Nd: YVO4 green laser and various optical components, the 3D 360° hologram images are dynamically reconstructed and projected onto the high speed rotating diffuser forming a 3D model at any viewing angle on the volumetric display media. Both volumetric display media, wet and dry methods are demonstrated to show their feasibility and convenience. Finally, the dry volumetric technique with vertical projection mounting is adopted and as the result shown that the speckle noise is significance reduced.
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Cheok Peng Lee, Cheok Peng Lee, Yong Poo Chia, Yong Poo Chia, Vijay Raj Singh, Vijay Raj Singh, A. Asundi, A. Asundi, Xuan Jie Khoo, Xuan Jie Khoo, Kiat Long Tay, Kiat Long Tay, Junxiang Zhou, Junxiang Zhou, } "Digital holographic display", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75225S (14 April 2010); doi: 10.1117/12.852468; https://doi.org/10.1117/12.852468
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