The current system for 3D imaging is produced by projecting two images simultaneously on the same screen. When viewers wear 3D glasses, they’re able to see the two images as one, which then provides the appearance of a three dimensional figure. A new system is being developed that would only use one projector and not require glasses.

The new method requires a special coating on the screen to change the polarization of the light as it passes through. It’s the change in polarization that creates a 3D image. this new method is under testing.