Digital holographic display for a single user

Even though digital holography was invented a number of decades ago, many people think there are still several problems for holographic display to be commercialized. The main problem results from the small space-bandwidth product of the spatial light modulators, since the holographic displays generally need enormous data capacity in comparison with other traditional display. But, if we define our target as a holographic display for a single user, it is feasible to build a holographic display with a reasonable screen size. In this paper, we introduce two kinds of digital holographic displays recently studied.