Displays that are capable of producing true three-dimensional (3D) images are a highly active area of research and development with potentially high payoff in a wide range of applications. The image to be displayed may come from 3D modeling data from a CAD software package, one of many medical imaging devices (such as an MRI or CAT) or computational models of 3D systems, to name a few examples. By providing information in a format that is natural to the human viewer, a 3D display allows the viewer to interact and interpret images or designs more intuitively and productively.
Many of the most promising 3D display concepts, in performance, practicality, and cost, are based on DLP technology. The concepts are typically divided into four approaches.