The New Scientist describes here differing perspectives on 3D TV.One approach – already well established for virtual environments used by engineers and surgeons – involves a home theatre projector running at high frequency to deliver left and right images in rapid succession.
The viewer wears LCD spectacles that alternately block the left and right eye view to ensure that each eye only sees the correct viewpoint – timing is synchronised via a wireless link with the projector.
Panasonic's 3D offering uses a plasma screen to flash the alternate left and right images, and should be on sale in the near future.
South Korean firm Hyundai uses an LCD screen to display left and right images simultaneously, using a filter over the screen to polarise the two images differently. The viewer wears polarising spectacles to see 3D image.
This system is already on sale in Japan, where limited 3D TV broadcasts started last year, and has also been adopted by Sky.
The image included shows twin cameras capturing a football match for later 3D viewing (Image: Sky)
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