Researchers continue to chase down the sci-fi holy grail of genuine free-standing holograms — and they're getting pretty close. One obstacle: Current computing systems just aren't up to it.
Earlier this summer, researchers at the University of Rochester unveiled the latest projection system to approximate Princess Leia's immortal plea. Dubbed the Illumyn 3-D Display, the system uses laser projection to generate actual 3-D holograms in midair — no projection surface, no virtual reality goggles, no 3-D glasses, no augmented reality tricks.
There is a catch, however: Holograms projected by the Illumyn system are contained within a glass sphere filled with heated Cesium vapor, an elemental metal that's particularly good at emitting light.


















