Sunday, March 27, 2011
Parallaxes, how do they work?
A parallax barrier is a device placed in front of an image source, such as a liquid crystal display, to allow it to show a stereoscopic image without the need for the viewer to wear 3D glasses. Placed in front of the normal LCD, it consists of a layer of material with a series of precision slits, allowing each eye to see a different set of pixels, so creating a sense of depth through parallax in an effect similar to what lenticular printing produces for printed products.This parallax barrier is used in the new Nintendo 3DS A disadvantage of the technology is that the viewer must be positioned in a well defined spot to experience the 3D effect.
In addition to films and computer games, the technique has found uses in areas such as molecular modelling and airport security. It is also being used for the navigation system in the 2010-model Range Rover, allowing the driver to view (for example) GPS directions, while a passenger watches a movie. It is also used in theNintendo 3DS hand-held game console and LG's Optimus 3D smartphone. People at Tech-On! have also put a 3DS screen under a microscope to show the parallax barrier.