We planned to build a volumetric display with a LED panel sweeping a cylindrical volume a while ago. In the end it was dropped because we underestimated how muc

We planned to build a volumetric display with a LED panel sweeping a cylindrical volume a while ago. In the end it was dropped because we underestimated how much pixels we need to push to that display. Even with the 1920Hz refresh rate of a 128x64 LED billboard panel we can only achieve like 5Hz volume refresh rate. Not to mention the heavy flickering and danger of a quickly spinning hunk of electronics. Volumetric display may be the future if we can couple a GPU directly to a quick enough display device. Until then we are stuck with VR.