The Basics of 3D TVs

The Basics of 3D TVs

The Basics of 3D TVs

There has been plenty of rumors and critics about 3d TVs and how it may dominate the TV market. One market research team projects the 3D HD TV industry to expand over 4 times in the next 9 yrs. This means that nearly all shows you watch... sports, movies, etc on a TV will soon be in a 3D format.

There's a few hints you should realize before you buy a 3D TV. For example: Is a blue-ray player needed to view 3D movies? YES. Is 3D a lot more expensive? Nope not really. Can you view 2D television (normal quality)? Yes you can switch back and forth from 2D to 3D.

A 3D display on a 2D surface is basically stereo for your eyes. One right image and one left. In fact 3D pictures and video is sometimes done by using left and right lenses that are slightly off set. How offset? Its Exactly off set as a pair of human eyes. Its about 4 inches or 7 centimeters. Its called stereopsis. The brain thinks its looking at a 3d image because its seeing 2 different pictures, from 2 different angles. The same 2 viewing angles as your eyes. This tricks your mind into seeing depth. Right now TV buisness can project those 2 images on to one screen at the same time without making them unclear and it cost to much to have 2 different TVs for each eye. This is how there able to mislead your brain into seeing 3D images on the screen.

3D TVs currently falls into 2 different categories. 3D movies you watch with active shutter glasses and 3D HD TV you view with polarized glasses.

This is how active shutter functions. The glasses are fueled by batteries and our linked to an emitter in your 3D television. The emitter sends radio or info-red signals to your glasses and tells each lens of the glasses to either open or close. Kinda of like a window shutter. This happens in-sync with quick flashing right or left images on the screen. This all happens over a hundred times a second. This is why its nearly impossible to turn your LED TVs or a Plasma television into 3D. This refresh rate is also known as the HZ.

Alright so your aware about active shutter glasses, but that's not the only way to see 3D. If you've seen Alice in Wonderland or Avatar in the movie theater you were using polarized glasses, just like shutter glasses. Polarized lenses lets you see different slightly off-set images in each eye. Fooling your mind into watching 3D, Movie theatrs have two differnt projectors flashing both right and left pictures on the screen. It all works and syncs together because it lets your left eye to see only the left image and your right eye only to see the right image and also polorized lense are not battery powered because there passive.

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