What Actually 3D Television Is

Now a days everyone is Talking About the 3-D Television.The main theme behind the 3D television is the Stereoscopy i.e a technique that creates the illusion of depth of three-dimensionality in an image.

To understand the basic concept behind the 3D television we will have to understand how our eyes exactly works.Let me take one example to explain it in a better way,look at any object then your left eye and your right eye are two separate lenses,registering two differently-angled images of the object,which are then sent to the brain.the brain then act as the ‘image processor ,putting the two pictures together to come up with one three-dimensional picture in your mind.it’s the basically the same principle by which the 3-d camera works.
3D_TV
Screen display 3D images is divided into two main parts

stereoscopic TVs(require special glass to watch 3d movies)
Auto stereoscopic TVs(appear 3-d without any special accessories)

Shutter Glasses(special glasses for 3D experience)

Basically these glasses that alternately shut off the left eye and right eye,while the TV emits the separate images meant for each eye.

Working of shutter glasses:

First of all the image get stored in the video signal of the TV.then the distribution of the images takes place images meant for the left eye store in the even field,and an image meant for the right eye store in its odd field.The TV itself is synchronized with the shutter glasses via infra -red or RF technology.

liquid crystal and a polarizing filter contained into the shutter glasses.as the synchronized signal received from the TV ,the shutter glass is automatically applied with a slight current that makes it dark, so at a time ,only one eye is seeing one image.

the technology perfectly draws the shutters over either eye to make the left eye see the image meant for it i.e even field,and make the right eye see the odd field .from viewing these two images from different orientation s,a 3D image is built up by the viewer’s brain.

with the high screen refresh rates ,the end user’s viewing smooth and rich.

Disadvantage of above technology:

Due to rapid drawing of shutters lesser light reaches the eye,making the image seem darker than it is.