How The 3d Effect Works

To understand how 3D TVs works. We should figure out how 3D functions, you need to first review how humans perceive the world in three dimensions. You have 2 eyes a left and a right eye. If you were to take a finger and put it close to your face and you look through your right eye and through your left eye. You can see a very much different object. If you move the object farther away and repeat the exercise. You will see the differences between the two, but not as big as it was. So what this does is you perceive 3 dimensions when you view objects that are near to us and the 3D effect drops off as objects are further away.

Their our two different light sources inside the movie-theater, 2 different projectors that put a polarizer on the front of each projector. 1 will be polarize for the left eye and one will be polarized for the right eye. So as long as you have a pair of eye-wear which have the same polarity as the left and the right, then this makes certain that the right image goes to the right eye and the left image goes to the left eye.

When you buy TV, it only has a simply single light source. So you'll have to create a left picture and a right picture in two different ways. This is done by synchronizing it. The projection image produces. What we have to do though for it to synchronize with our eyes is we have to use a pair of glasses that is synchronize to the television. So the television will tell the eye-wear... I am now showing the left image. So therefore the lens of the left side of the eye-wear will become transparent, the right lens will be going black. So therefore the left image is being seen by the left eye. This is all done really quick and is all mixed together which is why you don't notice any fast flashing.

When it comes to LCD HDTV or plasma television there is bad wrong with none of them compared to 3D TVS. The difference between plasma and LCD HD TV and that difference is fundamentally how they produce light.

For LCD HDTV they have to update their picture very quickly. The problem with a LCD is because LCD HDTV uses technology that functions as little gates that open and close to allow the back-light through. It may take sometime for those little LCD molecules to morph their state, This may cause a problem when the right eye sees part of the left image and the left eye sees part of the right image.

When it comes to plasma television. It creates frame sequential images. A right then a left. Plasma television starts when a tiny molecule creates its picture, then completely erases it and then goes on create another one. So when you produce a left, right, left, right picture, There’s a small chance of getting distortion between the left and right image.

By: Brandon Smitherston

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A 3D HDTV article is by Pat D.