Quote Originally Posted by sycld View Post
Actually, it could work with a television, but the problem has to do with the allowable range of viewing angles. With a small portable device screen, your eyes are always going to be more or less pointing directly at the screen, so you only need two images which correspond to what your eyes would see at an angle of 0 degrees.

A television is difficult because people have to be able to see the 3D image when they're looking at the TV screen from a wide range of angles, and even if you're looking at the screen dead-on you'll probably be close enough to it that not every part of the image is coming to your eyes at the same angle.

The way to solve this with this parallax barrier technology is to use multiple sets of images that produce a 3D image at different angles. The problem with this is that your resolution in one direction goes down by 1/(2*the number of image sets produced for different viewing angles). You'd need extremely narrow pixels that are still bright enough to form an image. All I know is that people are working on very small, intense light sources that may be able to accomplish this. However, if I had to guess, I would think that holographic video would be developed before pixels are shrunken down to a size that would ever make high-resolution multiple angle parallax barrier 3D even possible.
That's why I said the technology isn't being used on televisions.