3D Glasses In Movie Theaters

3D glasses can make a movie highly enjoyable. The tension builds in the theater as the monster starts to make his move on the damsel in distress. And then the monster pops out of the screen sending shrieks and cries throughout the theater. But how do these glasses work? How does the technology bring the image out of the screen?

There are several kinds of 3D glasses that moviegoers use. The most common of the 3D glasses is the Green/Red or the Blue/Red glasses. These glasses only allow certain kinds of color to pass through each eye of the viewer. In addition to this, two images are put on the screen from different angles. When you distinguish these two colors and the two images at different angles, the 3D effect is possible.

Another way that that 3D glasses are able to bring the effect of an image popping out of the screen is through polarization. Polarization will allow for color viewing of an image. This is achieved through transforming the wavelengths of the light that comes through each of the lenses. One of the lenses will transform light into a horizontal form while the other lens will transform the light into a vertical form. By transforming each of these lights, the eye perceives the 3D effect. Polarization can also be used in a circular form. When glasses are configured for this, one of the eyes views the wavelengths in a clockwise form, while the other views the wavelengths in a counter clockwise form.

Dolby 3D theaters, like the ones at Disney and Universal Studios, will use a technology called Infitec. Infitech is short for interference filter technology. This form of 3D uses a method that will filter out colors much like 3D glasses, but by a much more advanced method. Each of the colors are split into two different channels. Reds are separated into R1 and then R2. Blues are separated into B1 and then B2 and Green is separated into G1 and then G2. This color scheme is also found in some older televisions and is known as RGB. Each of the lenses will let one of the channels through and a 3D image is produced with a slight difference in color allowed to each of the eyes.

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