LG claims to have solved the problems with glasses-free 3D displays with a smarter eye-tracking technology that adapts to the viewing angle of the user. Available this fall in a 20-inch monitor, the smarter 3D solution eliminates the need for glasses and is compatible with normal 2D imagery. Glasses-free 3D displays, called auto-stereoscopic displays, have in the past depended on lenticular lenses that fit over displays to divert separate images to the right and left eyes. Unfortunately, lenticular lenses scramble regular 2D images. Parallax barriers are an alternative to lenticular lenses, but they do not provide a wide variety of viewing angles. LG has solved this last remaining problem with smarter eye-tracking technology that adapts the parallax barrier as the viewer's head moves.
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