Helio Display: Open-air hologram

That site is a reseller for io2: http://www.io2technology.com/

nice, thanks for that, didn't realize.

>Heliodisplay images are not holographic

First five words. Accuracy in titles is a virtue.

Ok, there's a technical definition for "hologram" which the Heliodisplay doesn't meet. But, it does achieve the star wars effect nonetheless, and that's what's cool about it.

OK, how does this work? What are the basic physics behind the technology? You can't project on "air" as far as I know because it is transparent so the light won't reflect. Anyone know how this sucker works?

Nevermind. http://en.wikipedia.org/wiki/Heliodisplay explains it. The projection surface is actually a very fine ist being sprayed. That makes perfect sense, the original website doesn't mention anything about water.

Also here's a pretty good video of it: http://in.youtube.com/watch?v=XOSx7v87JCA

Not quite open-air. Goes through about 120ml of tap water an hour, which it sprays onto the air, and uses a rear projector onto that.

The video doesn't look too impresive. It just shoots up water and projects a 2D image onto it.

Maybe has potential. But I'm not all that excited about spraying water into the air.

about time