Volumetric display - 3D images in the air

[pocaracas]

Of course!

Several problems I can see with this technology:

1.  It seems to me to be able to manipulate the location of the particle truely freely, there needs to be 6 lasers That can reach it to move it in both direction on each of X,Y and Z axis.   This means the device projecting the image will have to have laser emitting appendages, above, below, to the left, right and in front and behind the image.  This make it somewhat cumbersome.

Not handheld, gotcha!

2.  I m not sure if a laser that can heat a particle enough to move it rapidly in the air can be eye safe.

Near-visible... I'm guessing also near-Infrared. Aimed mostly upward, should be ok.

3.  How long will the particle last under repeated propulsive heating by the lasers?

Don't know. They don't say. They say they are using a cellulose particle.... like paper?

4. Can one particle truly be moved so fast and accurately that it can etch complete images within each 1/10 of the second?

Apparently, so. It's even almost fast enough for a 25fps camera to only pick up some flicker.

5. How would a whiff of breeze affect the motion of the laser propelled particle?  Or does this only work in a vacuum tank?

A breeze would disrupt the thing, but it doesn't seem to have to be done in a vacuum tank... just indoors, closed windows.