Holographic Laser Projection

Phase-only holographic projection has prompted a great deal of research and has often been cited as a desirable method of 2-D image formation, since such a technique offers a number of advantages over conventional imaging projection technology. Although holographic image formation was demonstrated some forty years ago, efforts at realizing a real-time 2-D video projection system based on this technique have not been successful, principally due to the computational complexity of calculating diffraction patterns in real time and the poor quality of the resultant images. In this paper, a new approach to hologram generation and display is presented which overcomes both of these problems, enabling-for the first time-a high-quality real-time holographic projector.