So what you're saying is if we had camera shutters over our eyes we could have light projections in the air that become holograms when calibrated. Got it.,(reply>), @heatshield yes i see now that you meant active 3d glasses, but I don't think it would work that way. Otherwise someone would have already made "hologram glasses", perhaps it's tied to the framerate pf the camera? And the active glasses cause eye fatigue and headaches to a lot of people, so maybe that's why it's not used.,(reply>), @The_UNkilled look into it a bit, you'll see what I mean.,(reply>), @heatshield ? no he's not, 3d glasses use 2 different LENSES to trick your mind into thinking the two images on screen are not 2D, but for this to work you need CAMERA SHUTTERS since the laser is constantly going and depends on the shutter of the camera for the illusion.,(reply>), you guy figure it out yet? you're describing 3d t.v. glasses,(reply>), @The Superginge well the glasses would need to be huge, or at least something like the google glass since it need a camera and a display in front of your eyes so you don't see anything else around your fov