3D advertising and flash-bang defences poised to explode

摘要

Advertising displays could soon appear out of thin air, thanks to a laser system that projects moving 3D images in the sky. The system, developed by Burton of Kawasaki, Japan, focuses a laser pulse onto a point in the air to ionise it, briefly creating a ball of glowing plasma, dubbed a flashpoint. By firing hundreds of laser pulses each second, the system creates the illusion of many constant points of light. An early version of the system, created in collaboration with teams at Japan's National Institute of Advanced Industrial Science and Technology and Keio University, Tokyo, was unveiled in 2006. It produced 200 flashpoints per second and used a mechanical system to move the laser. This limited it to displaying basic 2D images.