3D television (3DTV) is actually a common term describing various types of TV technology.
The most well established type is that which uses stereoscopic effect meaning the creating of illusion of depths by demonstration of a pair of 2D images, each of those are seen with either left or right eye. This technology basically is divided in 2 subsystems: polarized 3D system and active shutter 3D system. Both systems use special glasses.
A polarized 3D system uses polarization glasses to form the illusion of 3D video. Such glasses contain a pair of different polarizing filters; each of these receives the light from only one of the two 2D images. For a viewer these images are combined in a whole 3D image.
An active shutter 3D system works by only demonstrating the image intended for the left eye while blocking the right eye’s view, then presenting the right-eye image while blocking the left eye. This process repeats so rapidly that the interruptions are not perceived by user and two images are fused into a single 3D image.
Besides, a number of technologies that do not require the use of glasses have been developed but they are still too expensive to sweep the market.
Despite the continuous growth of 3D sets’ sales around the world, many experts and market players are not so optimistic about the future of the technology. Some broadcasters indefinitely suspended their 3D programming due to a lack of uptake. It can be explained, for instance, by the fact that many consumers consider the use of 3D comfortless.