Anaglyph Stereoscopy - the well known red-green glass method, Polarization methods as used in "RealD 3D", LCD shutter-glass method which is used in LCD TVs and monitors, Interference filter method - a modification of the anaglyph method and, Autostereoscopy which provides glasses free 3D for portable devices- for example the Nintendo 3DS gaming console and LG optimus 3D and HTC Evo 3D smartphones.
The Majestic Superior 3D theatre uses Dolby 3D technology. The glasses issued and the intro displayed before the movie starts says so. This Dolby technology is an interference filter method which is an improvement over the old anaglyph method. What it does is, it provides two different full colour images with slightly different wavelengths to each eye thus giving rise to the illusion of a third dimension. The projector consists of a colour filter wheel which filters the light before it hits the screen. The viewers glasses contain complementary filters that filter light according to its wavelength and gives two images required for 3D, to each eye of the viewer with two different shades of primary colours (created by a difference in wavelength). This can be seen by holding the glasses about 1 foot away and looking through both lenses at the screen before the movie starts. Two different "tints" will be seen through the two lenses. The colour filter wheel can also be disengaged from the projector giving only 2D images. This means that the same theatre can be used for 2D movies as well.
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| image from : dolby website |
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| image from : wikipedia |
http://www.dolby.com/us/en/professional/technology/cinema/dolby-3d.html
http://en.wikipedia.org/wiki/3D_film
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