What is 3D TV, how does it work and what do you need to watch it? A 3D TV is a television that displays content in manner where it appears to be three dimensional. There are currently four different approaches to displaying 3D content. Three of them require wearing glasses and one does not, below we cover each approach in a little more detail along with providing information on how 3D TV works.
3D In Movie Theaters The original approach to 3D is called Anaglyphic 3D, you will recognize this approach because viewers wear glasses with red-cyan lenses to watch it. This was originally used in movie theaters dating back to 1921 and is still used in some cases due to the cheap glasses. However the clarity is not very good which is why the methods below are quickly gaining in popularity.
The method used in most movie theaters today, also in JVC 3D TVs, is called Polarization. This method involves wearing glasses called polarized glasses. Which cost a little bit more than red-cyan glasses but the clarity is much better. This is one of the reasons 3D has gained in popularity, because this approach provides a much better picture.
3D TV Today's 3D TVs work differently than the 3D you see in the movie theaters. Most TV manufacturers have standardized on active shutter glasses which is using an approach called Alternate Frame Sequencing. This approach involves wearing glasses that synchronize with the TV and alternate which eye can watch the content as the TV alternates the content for each frame. Sounds complicated but it is not, see how does 3D TV work for details and diagrams.
3D TV With Out Glasses Enough with the methods that require glasses. Most people want to know how to watch 3D TV with out glasses. There is a method called Autostereoscopic that provides 3D without glasses, however this is not yet available for televisions. This technology is will first be available in computer monitors and cell phones because it currently does not have a wide viewing range meaning the viewer needs to be directly in front of the screen in order to see the content. More information can be found at 3D TV with out glasses.
Requirements For 3D TV Requirements for 3D TV include a 3D TV, 3D glasses and something to provide content such as a 3D Blu Ray player or 3D TV set top box. For the TV, if you have a 3D ready TV you may be able to purchase a 3D TV converter. For additional details on how to find the right TV for your needs and other requirements, see requirements for 3D TV.
Disadvantages Of 3D TV There are things people do not like about 3D TV. Some people experience headaches or nausea while watching for example. See disadvantages of 3D TV for details on on this and other concerns.
What is 3D TV Conclusion
In conclusion, 3D TV is a method for displaying programming that tricks the brain into believing it is seeing a real 3D object. There are currently four different approaches to displaying 3D, however almost all TVs are using the active shutter approach. That's it. Now you know what is 3D TV and a little about how it works.
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