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. In the near future, the market will be flooded with 3D televisions. Creating a 3D image on televisions, can be done in a couple of ways.
Some technologies cost more than others. But other technologies are easier to build. Before a manufacturer brings 3D tv to the market, he will have to think about these trade offs. There exist three main technologies for creating 3D images on televisions.
Lenticular viewing. A technology that the Philips company came up with a few years ago. This technology allows people to watch 3D without the well known 3D glasses. Most people think the glasses are either silly, cumbersome, or a combination of both. The lens used in televisions based on the lenticular viewing concept, send a different image to each eye. The left eye’s image is going to differ slightly from the one that is sent to the right eye. These type of televisions will have a very small viewing angle, unfortunately. And they cannot be watched by multiple persons.
Passive glass systems. Hyundai is now working on a flat screen that you can use for either 2D or 3D movies on. If you want to see three dimensional images, you’ll still need the 3D glasses. These screens can display two images which overlap. 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. You can already buy televisions like these 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. Instead, the effect comes from the glasses almost completely. For starters, the glasses have to be synchronized with the television’s refresh rate. Then, the television displays for left and right eye alternatingly. The active shutter glasses will make sure the right eye sees the images meant for the right eye. 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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