3-D Flat Screen – The Technology Explained

3D television is without any doubt the latest hype in consumer electronics. Ever since 3D movies started to hit cinemas, people have wanted to watch movies in 3D at home. Market demand for 3D at home rose quickly and market supply soon followed. There are many ways of creating the 3D experience on LCD televisions.

Some methods are more expensive than others. Yet other methods are more feasible than others. Before a manufacturer brings 3D tv to the market, he will have to think about these trade offs. There are three main technologies for making 3D televisions.

Lenticular viewing. A technology that the Philips company came up with a few years ago. If you want to watch three dimensional television with this, you’ll have to wear 3D glasses. There are some people who feel that the glasses look kind of silly. The lens used in televisions based on the lenticular viewing concept, send 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. The downside to this, is that these television sets have a small viewing angle. And they cannot 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. These screens can display two images which overlap. The 3D glasses will have polarized lenses, allowing each eye to see one image. The three dimensional effect that this creates, is very convincing. Televisions like these can already be purchased today. They come in the sizes of about 40 to 50 inches.

Active glass systems. This system works almost like the system with passive glasses. The biggest difference is that the television is not responsible for most of 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. Then, the television displays for left and right eye alternatingly. The right eye only sees the images meant for the right eye, thanks to the active shutters in the glasses. It goes without saying that the same happens for the left eye. Because of how this system works, the television’s refresh rate is basically cut in two. It’s highly recommend that you get a television with at least a 120Hz refresh rate when using active shutter glasses.

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