Heliodisplay
Help me, Obi-Wan Kenobi
“Holographic” free-space display? Have they finally done it?
I would dearly love to learn the operating principle behind this. Watching the demos carefully it appears that, although the image is affected by air currents, it still requires a direct line of sight between the emitter and the viewer. That latter fact, as well as the presence of dual-viewing capability, would suggest that it is “painting” a virtual image on the viewer’s eye rather than directly “in the air”.
(If you have to see one demo, check out the “military defense applications” [love that qualifier] video on their images page—the others could be too easily faked with a conventional projector.)
[Hat tip: Technocrat.net]