ABSTRACT
This chapter reviews some of the important holographic display methods. One of the challenges of holographic displays is to make the viewing retain the qualities of the three-dimensional object while keeping the process simple and accessible to many observers. A non-holographic stereogram can be formed by using a lenslet array in front of the film to image a different perspective of the scene onto the film. The displaced object photographs are then used as the objects for recording the holographic strips in the stereogram. One of the most interesting and challenging types of holographic displays is a dynamic one that allows the images to be changed within a short period of time. Holographic elements are very effective in head up and helmet mounted displays. One approach to realizing the exit pupil expander for both eyes can be accomplished with holographic elements combined with a folded or substrate mode optical system.
