3D Tv - Three Dimensional Television is arrival of Age

Three Dimensional Television is going to be the latest must have technology for the home, and its coming has been heralded in a major 2010 buyer Electronics Show (Ces) in Las Vegas, Usa.

It might be difficult to believe, but the first experiments in three dimensional television date back to the early 1970's when a investigate group based in the United Kingdom started to look at the possible of using obvious exotic materials to generate a 3-D Tv effect. Now, four decades later, buyer 3-D televisions are all the rage at the 2010 buyer Electronics Show at Las Vegas.

History of 3-D

3-D has been employed in assorted media for over 150 years. Initially it was used in photography where two photographs of an object taken from slightly distinct angles were combined in a stereographic viewer to generate a 3-D effect. After still photography it was the turn of the movie commerce and the first 3-D movies began to appear in the 1920s. These movies required the use of extra glasses with red and cyan lenses.

How does 3-D Work?

There are a whole of ways of creating a 3-D image, but they all aim to achieve the same thing; to produce slightly offset images in each eye so that the brain combines them into a particular 3-D image in the same way that it achieved depth perception in the real world.

One way is to use glasses with one red lens and one cyan lens. These are used to view images that are made with offset coloured layers. Each lens filters out one of the layers, so each eye sees a distinct layer and the brain combines them into a particular 3-D image.

Another way of achieving a similar corollary is the use of polarising glasses. One lens polarises in one direction and the other in the opposite one. The image to be viewed consists of offset images projected with opposite polarisations, so the vertically polarised lens allows that eye to see the vertically polarised image, and the horizontally polarised lens allows the other eye to view the horizontally polarised image.

A third way is to use alternate frame sequencing. Left eye and right eye images are projected simultaneously and the viewer wears extra Lcd glasses which open and close each lens in sequence with the projected image. The glasses can be controlled using radio signals, and are an ideal candidate for Bluetooth technology. In fact Bluetooth 3D Glasses were unveiled at the Ces show.

Naturally, wearing specialised glasses has its drawbacks, and the most sought after 3-D technologies are those that do not rely on such devices. Any such technologies have been developed and together they are referred to as auto-stereoscopy.

The most base of these uses lenticular lenses, which are lenses that vary in magnification depending on the angle from which they are viewed, and parallax barriers which allow each eye to see a distinct image. Alternatively eye tracking can be used to ensure that the proper images are displayed to each eye.

3-D Tv Models

The first High Definition 3-D Tvs were produced for business, and were far too costly to be carefully proper for domestic use. They were manufactured by Philips and used Wowvx technology. This technology is auto-stereoscopic and does not necessitate wearing glasses. It uses a disagreement of the lenticular lens technology described above. Philips has now withdrawn from future developments of the technology until a glasses-free 3-D Tv format is agreed amongst the major manufacturers.

Now all the major Tv manufacturers have demonstration 3-D Tv's and they were unveiled at the buyer Electronics Show in Las Vegas in January 2010. amongst the commerce showcasing their new 3-D models were Samsung, Sony, Panasonic and Lg. Unfortunately all of these use alternate frame sequencing technologies as described above and glasses must be worn to caress the 3-D effect.

It is thinkable, that these will be ready commercially in the Us early in 2010 and in Europe a diminutive later. It is thinkable, that roughly four million will be sold in the first year.

Naturally there is no point in having a 3-D Tv if there are no 3-D broadcasts. So far principal develop has been made in this direction: the Discovery channel is teeming up with Sony and Imax to furnish 3-D broadcasts; BskyB in the Uk will be launching a 3-D service in late 2010; Espn have announced that they intend to broadcast nearly 100 sports events in 3-D; and other plans to broadcast 3-d are in the pipeline.

The Future: Auto-stereoscopic Tv in the home?

The major drawback with current 3-D Tv models is the need to wear extra glasses, so will it ever be possible to do without them? In fact the talk to this is probably. As was mentioned above, the technology has already been demonstrated, but the question is that the price is naturally prohibitive and, until a proper can be agreed amongst manufacturers and broadcasters, currently face academia any added developments are on hold.

We think there is a danger that the current 3-D Tvs which need that viewers wear extra glasses will end up as a short-term gimmick and, once the novelty has worn off, it could be a industrial failure. This could whether railroad the improvement of 3-D Tv without glasses or is could delay it. Only time will tell.

3D Tv - Three Dimensional Television is arrival of Age

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