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3DTV Without Glasses

  • By Barry Knightly
  • Published 03/2/2012

Now that we have been blessed with glasses-free or auto-stereoscopic handheld games consoles, surely 3DTVs without 3D glasses are only around the corner?

Some people don’t really see the idea taking off in the mass market. They think it won’t be an affordable product, but these opinions can be considered a little futile as these TVs are already in existence on the other side of the globe in Japan.

So how do 3DTVs without glasses actually work? Well, instead of using glasses to differ the image seen in each eye, the auto-stereoscopic TV has, hidden behind its glass panel, a lenticular lens that does the job for it.

But there a couple of catches, the first being that the lens really cuts the resolution down a noticeable amount. Perhaps a bigger issue is what people call the 3D sweet spots. These are the limited perspectives that 3DTVs (without glasses) can be viewed effectively. If you are not in a sweet spot it really limits the 3D effects that the TV can offer a viewer.

Undoubtedly, the challenge for TV engineers in the future is to solve these problems. Increasing or even eradicating sweet spots would mean real advancements for glasses-free 3DTV.

The challenge for 3DTV engineers is to increase the number of views, and eliminate the gaps between each; the current form is nine views, with around 15 needed to make such TVs comfortable enough to watch.

However when these snags are resolved, we can be sure that it will lead to a truly remarkable experience for viewers. Effectively it will be like looking through a window and gauging a real feeling for the depth-of-field. This kind of experience without glasses will be ground-breaking when it can be realised in a manner that doesn’t effect the resolution or the number of sweet spots available to TV watchers.

About the Author: Barry Knightly is a fan of 3DTV.

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