Toshiba to introduce at the International Consumer Electronics Show-televisions and a laptop that can display 3D video without requiring the viewer to put on glasses.The televisions have been available in Japan since late last year. Representatives from Toshiba demoed the laptop for The New York Times last month.
The laptop works by using a Webcam to find a viewer's eyes, then sends different versions of the image to each one, creating the illusion of depth. The image quality was indistinguishable from that you can see with glasses-required 3D, although the screen was much smaller than the giant 3D televisions that manufacturers have been marketing. The technique also worked fine even if the viewer was wearing regular prescription glasses.One shortcoming of a no-glasses approach is that only one person at a time can see the 3D effect
The televisions that Toshiba will be showing at C.E.S. are based on a different technology.Even those who insist that 3D has a bright future in television acknowledge that the glasses are a problem. They are expensive, often ugly and if you already wear glasses, they can be uncomfortable. Furthermore, you need a pair of glasses for each person, a particular challenge when the technology is being pitched as a new way to watch sporting events, often a communal activity.Toshiba first showed off its no-glasses developments a few months ago in Japan. It has 12-inch televisions in stores now, which sell for about $1,400
Source : http://gadgetwise.blogs.nytimes.com/2011/01/05/3d-without-the-glasses
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