3D DISPLAY

A 3D display is any display device capable of conveying three-dimensional images to the viewer.
There are many types of 3D displays. They may range from coventional stereoscopic displays that show a different image to each eye; autostereoscopic 3D displays do this without the need for any special glasses or other head gear. Holographic 3D displays reproduce a light field which is identical to that which emanated from the original scene (for the technology, see Computer Generated Holography).

In addition there are volumetric displays, where some physical mechanism is used to display points of light within a volume. Such displays use voxels instead of pixels. Volumetric displays include multiplanar displays, which have multiple display planes stacked up; and rotating panel displays, where a rotating panel sweeps out a volume.

Recently, a new technology has been developed to project light dots in the air above a device. An infrared laser is focussed on the destination in space, generating a small bubble of plasma which emits visible light. Up to now (June 2008) the experiments only allow a rate of 100 dots per second.