HP Labs researchers developed a prototype glasses-free holographic LCD display
HP Labs researchers developed a prototype glasses-free holographic LCD display. As a holographic display, there's no limit on viewpoints. The display uses so-called directional pixels that are made up from nanopatterned grooves on the display that send light off in different directions. Each pixel has three groove sets - to direct red, green and blue light in different directions. The reflected light passes through a regular LCD panel that handles image creation.
This is still an early stage prototype, but still an impressive achievement. The prototype can show static images in 3D from up to a meter away in 180 degree field of view. 30 fps video is only viewable in 90 degrees. Creating the content is not easy - a single 3D image requires taking 200 different images.
Source: The Verge