Designers at Ramboll have created the Cheoptics 360 projection system. This system allows video to be projected into the air and can be viewed from 360 degree angle.

Cheoptics360 XL display revolving video images that can be viewed 360° under all ambient light conditions. The unit is made for indoor or outdoor use in sizes from 1,5m – 12m, capable of visualising cars and humans in scale 1:1. The shape and form of Cheoptics360 XL can be customized to integrate with any branding and environment. The unit can be suspended from buildings and structures or used free standing.

see video here