Polarized Glasses

Polarized 3D glasses create the illusion of three-dimensional images by restricting the light that reaches each eye, an example of stereoscopy which exploits the polarization of light. (wikipedia).

How Do These Glasses Work?

Polarized glasses will give the effect of binocular vision is to give the illusion as if the object being viewed has a depth. This vision occurred exactly when viewing with the naked eye. This is the result of different polarizations are given for each of the glasses lens. Each lens polarizing filter glasses are one type. The brain then will bring together the two images.

Polarized glassed intended to view a 3D cinema, 3D laser shows, music concerts, video games. To present a stereoscopic film, two images are projected superimposed onto the same screen through orthogonal polarizing filter (usually at 45 and 135 degrees).

There are two kinds of polarized glasses are polarized linearly and circularly polarized. These glasses are made ​​using cardboard or plastic that is generally the same size fits all.

Linear polarized glasses require the viewer to keep his head level, such as tilting of the filter will cause the image view from the left and right channels bleed into the opposite channel.
The results of circular polarized glasses are the same as seeing steroscopic using linearly polarized glasses, unless the viewer can tilt his head and still maintain left / right separation (although the fusion of the stereoscopic image will be lost due to a mismatch between the eye and the camera original plane plane).

Advantages

• Polarized glasses cheap price (<$ 20), because they do not contain electronics.
• Cinema polarized 3D glasses are widely available and compatible with the TV. (The cost to buy these glasses are usually less than $ 5.)
• Polarized glasses are not electronic, so no need to be recharged.
• Shutter glasses have a flicker that some people see no flicker in the polarized glasses.

Disadvantages

• Using polarized lenses, the user must keep the head upright. Since turning his head 90 degrees to reverse the image for both eyes, which would be very confusing to the brain for possible injured or cause headaches.

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