A fog display, fog screen, vapor screen or vapor display is a system that uses haze machines or water vapor to create a semi-transparent wall, or "curtain" of suspended particles which trapped in a thin sheet (Laminar Flow) of air and are illuminated by a projector,[1] in order to produce a display whose images seem to float in mid air.[2] Several commercial systems exist, such as , Displair and Heliodisplay. There is also an open-source variant being developed called Hoverlay II[3][4]

This system can be expanded using multiple projectors to create a three-dimensional image, thus becoming a volumetric 3D display.[5]

See also


  1. ^ "How To: DIY (Improved) Inexpensive Fog Screen - Blog". proSauce. 2012-06-10. Retrieved 2013-10-23.
  2. ^ Ragan, Sean Michael (4 January 2012). "Princess Leia "Hologram" Vapor Display". MAKE. Blog.makezine.com. Retrieved 23 October 2013.
  3. ^ Hoverlay II github page
  4. ^ Makertum Hoverlay II device
  5. ^ Stevens, Tim (17 March 2011). "3D fog projection display brings purple bunnies to life, just in time to lay chocolate eggs (video)". Engadget.