Toshiba is readying two 3D televisions that can produce images with the illusion of depth but don't require the user to wear glasses, it said Monday. It will launch the televisions in Japan in December. By dispensing with glasses, the TVs answer a key complaint of would-be buyers -- but they won't come cheap.
Toshiba will offer a 12-inch model and a 20-inch model. They'll cost around
3D TVs can simulate depth because they deliver a slightly different image to each eye. In current 3D TVs, images for each eye are displayed rapidly one after the other. Filters in the glasses flash on and off in sync with the TV picture so the right eye sees one image and the left eye sees the next.
Toshiba's new TVs have a thin sheet of small lenses in front of the display. This splits light from the screen and sends it to nine points in front of the TV. If the viewer sits in one of these sweet spots they get the 3D illusion.
The nine spots should enable several family members to watch a 3D image at the same time.
Similar technology is used in Nintendo's recently announced 3DS handheld gaming device. The 3DS has a screen from Sharp and sends the image to just one spot -- something that isn't a problem with a handheld
Toshiba unveiled the new TVs on the eve of the Ceatec electronics show. At the event the company is also demonstrating the same glasses-less technology on a 56-inch prototype TV.
The need to wear special glasses has been a common complaint about early 3D televisions. The glasses are required for each viewer, they generally weigh more than a typical pair of eye glasses, and because they contain an electronic circuit, they also need to be regularly recharged.