The latest craze in modern electronics, is beyond the shadow of a doubt 3D television. Ever since 3D movies started to hit cinemas, people have wanted to watch movies in 3D at home. In the near future, the market will be flooded with 3D televisions. There exist several technologies to create a 3D image on televisions. Some ways of doing it are more pricey than others. But other methods are more easily doable by manufacturers. Before a manufacturer brings 3D tv to the market, he will have to think about these trade offs. When it comes to creating 3D televisions, there are three main methods of doing it.

Lenticular viewing. This is a technology that has been devised by the always creative Philips company. If you want to watch three dimensional television with this, you’ll have to wear 3D glasses. A lot of people, however, feel the glasses are kind of cumbersome. The lens in televisions with lenticular viewing, sends a different image to each eye. The left eye will get an image that slightly differs from the image that goes to the right eye. A small viewing angle is the downside to this type of television. They can also not be watched by multiple persons.

Passive glass systems. Currently, the Hyundai company is developing an LCD monitor which will allow for both 2D as well as 3D viewing. A 3D glasses is still required for viewing three dimensional movies on these screens. The television will display two overlapping images. Because of the polarized lenses in the 3D glasses, each eye only receives one of the images. The three dimensional effect that this creates, is very convincing. Televisions like these can already be purchased today. A typical size for these screens is about 50 inches.

Active glass systems. This system is very similar to the passive glass system. The only difference is that the television doesn’t do any work to produce the 3D effect. The glasses by themselves almost completely produce the effect. The television has a certain refresh rate that the glasses need to be synchronized with. Alternatingly, the television will display images for the left and for the right eye. The right eye only sees the images meant for the right eye, thanks to the active shutters in the glasses. Naturally, the same happens for the left eye. This effectively halves the refresh rate of the television. Therefore, a minimum of 120Hz refresh rate is recommended in combination with active shutter glasses.

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