Wednesday, March 26, 2008

Special glasses

The fantasy of three dimensions on a two dimensional surface can be created by providing each eye with different visual information. Classic 3D glasses make the illusion of three dimensions when viewing specially prepared images. The typical 3D glasses have one red lens and one blue lens. 3D glasses prepared of cardboard and plastic are distributed at 3D movies. Another type of 3D glasses uses polarized filters. One type of electronic 3D spectacles uses electronic shutters.Virtual reality glasses and helmets have separate video screens for each eye and a method for formative the direction the head is turned.

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