CES 2012

Toshiba was showing its latest prototypes of glasses free 3D. In comparison to last year's demos, the results were much improved. The secret appears to be the use of a 4K LCD panel, which ups the convergence available to each eye—much like the new, jumbo 4K set shown by LG appears to improve the (passive glasses) 3D performance of that set. If you’re watching 3D alone, the set tracks your head position and adjusts the picture to provide optimum performance. In a group showing, the 3D works properly only in 9 individual regions across the front viewing area. A small circular bug at the top center of the screen (visible in the photo) tells you if your head is in a hot spot for 3D. Toshiba expects to have sets in stores in late 2012. But the use of a 4K panel suggests that the first such sets will be expensive, so I wouldn't hold off purchasing a 3D set hoping to have a cheap, glasses-free alternative real soon now.