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How the Nintendo 3DS 3D works

GamePro: Nintendo's newly announced 3DS handheld promises 3D imagery without the need for goggles. How is this possible? If it does indeed use Sharp's "parallax barrier" technology, this is how it works.

Though not confirmed by Nintendo, it has been suggested by a number of sources that the 3D display used in the upcoming Nintendo 3DS is to be based on the parallax barrier LCD from Sharp. But how does it work?

Up until recently, to view 3D graphics it has been necessary to wear polarizing (or red and blue) glasses to separate the images and fool the brain into perceiving the image as having depth. Sharp's 3D LCD uses what the company calls a "parallax barrier" system which is implemented by using both a conventional TFT LCD display and a specially developed "switching liquid crystal."

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