3D T.V. The Future of Entertainment?
An example of how this works
What is it?
For those of you who don't know, the concept of a 3D projection is rather old. One of the first
3D projectors with polarized glasses dates back to the early 70's! So the fact that this idea has been around for about 40+ years kind of makes you wonder why haven't we done much to already have T.V.'s with this kind of technology in homes? well, we have done even better than that. The scientists and physicists that have been hard at work have finally created a 3D T.V. that doesn't require glasses to watch it.
How It Works
How does this actually work though? For the longest time we have seen 3D movies with the red and blue lenses or "I-MAX" glasses in the theater. Now that we have the understanding of the eye's way of seeing images and processing them we can use this to our advantage to "trick" the eye into seeing two images at different angles to make it seem like the image is "popping" out of the image. Images are separated by a Parallax screen which separates the two images and make the eyes able to see picture from two different angles. As seen in the picture, the image represented by the red squares are turned to the right eye's visual span and is the left focus. The same image, represented by the blue is opposite as the red which means that it is pointed towards the left focus.
The Brain's Part
These two images are met at one point which is what we see. The reason why we don't see two differently angles pictures is because the brain puts the two images together where they are crossed in paths. This barrier can be turned off or on for viewing in 2D and 3D. It is said that if you go from 3D to 2D that it is brighter and therefore a little more clearer. So obviously, this technology still has a little whiles to go in order to be perfect, but we are definitely one step closer to perfection of the future of visual entertainment!
If you are still unclear go to http://www.popsci.com/gadgets/article/2011-03/how-it-works-3-d-tv-without-glasses and they explain it in detail.
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