The concept of three dimensional technologies has been around since 1950. But it was not very much popular in the people few years back. Three dimensional concept works in the same way our eyes work. It is that 3D vision is possible because our both eyes receive slightly different images. Our brain works as a processor; it understands this slight variation. Calculation of the distance creating the sense of depth is carried out by our brain as well. As greater the variation will be between the images closer the object will seem to be. At the same time closer the object will be larger will be the distance between the images perceived by the eyes. As mentioned earlier same is the principle used by 3d glassesand 3D images. Now the question arises how 3D concept works?
In easy word it can be said that three dimensional visions is a nurtured blend of our science and nature. The way our eyes and brain work together to perceive things is the same way utilized in this technology. If someone wants to make the objects clear then the distance between the images is increased; on the other hand where there are far objects then distance between two images is also decreased.
3D glasses have two Polaroid filters which keeps one of the tow images through it while allows the other image to pass through the other filter. In case you will take off your 3D glasses you will see that there are two images presented on the screen.
There is another form of 3D viewing which does not even require a person to wear 3D glasses. It makes use of a lens which sends different images to each eye. Both our eyes receive different images. It reproduces the natural process of our eyes perceiving depth.
Keeping in view the need of the hour television manufacturing companies is transforming their traditional television sets into 3D TV sets. This is helping them to spread this 3D technology in homes of people so that every one can enjoy the whole new experience of three dimensional entertainments at their homes with their family members.