The Study Of Computer-generated Holography And Reconstruction Based On DMD

Computer-generated hologram (CGH) combines computer and holographytechnology, uses computer to generate holograms, and doesn’t need the actual light path,so it not only greatly reduces the cost of hologram, but also can make the hologram ofvirtual objects. Digital Micro mirror Device (DMD), whose aperture ratio is more than90%, can display high-brightness high-resolution reconstruction and image. Thereconstruction system based on DMD has a good application prospect.In this paper, the research is carried out around the colorful holography system basedon single DMD. The main contents are as follows:1. An improved algorithm is proposed based on the “host” Fresnel plate method,which is easy to lose the high-frequency information Improved algorithm can generatethe hologram of three-dimensional object quickly and efficiently, and get the high qualityof the reconstruct image finally.2. A color display system which considers single DMD as the core part is designedbased on the optical properties of the DMD. For this system, we made some adjustmentson the original object to eliminate the chromatic aberration, and get the color reconstructimage finally.