Free-Space Display

A free-space display is way of projecting images onto mist or smoke. This is typically used in laser light shows, but can also be used to display a 3D image suspended in air.

A company called IO2 Technology has engineered a free-space display they call the Heliodisplay. This device displays a 2D image that seems to hover in place. Darker parts of the image appear to be transparent. The image the Heliodisplay projects can even be interacted with like a touch screen.

Recent videos of Heliodisplay in action