Technology has come a long way since televisions were first introduced to society, starting with small, grainy, black and white models, and advancing to 60 plus inch screens. Plasma, LCD, and HD are the models of choice in the 21st Century. The newest invention: 3D TVs.

What is the difference between 2D and 3D?

To understand this, we need to first comprehend how the eye perceives images. Basically, each eye sees images in just a slightly different way. Together, the eyes help us develop our sense of distance and depth perception. If you were to cover one eye, then you are only seeing in 2D. Most TVs are 2D. The images are projected straight out of the screen and our eyes accept these images as is. However, the technology of 3D television has been designed to trick our eyes into believing that we are actually seeing the images in 3D rather than 2D.

How do 3D TVs work?

3D TVs are similar to the movies that you go to on Saturday night at the theater. When you walk into the cinema, you are handed a pair of 3D glasses to wear. Without these glasses, the images on the screen will not look 3D; in fact, they will appear somewhat distorted and shadowy around the edges. There are a few different types of glasses that can be used to watch your new 3D TV. These include color filtered, polarized, or active shutter glasses. Let’s take a look at the pros and cons of each type.

What are color filter glasses?

Color filter glasses have one red lens and one blue lens. When you look through them, the two colors overlap and cause the images in front of you on the screen to appear in 3D. These are very inexpensive to buy but they also have a few drawbacks. The 3D images are of poor quality and you may see red and green tints on the screen.

What are polarized glasses?

Polarized glasses are an improvement from the color filter glasses. These glasses separate light in such a way that one eye sees one image and the other eye sees another image. They are also inexpensive and allow you to easily switch between 2D and 3D. However, these glasses – which most theaters use for their movies – cannot be used for your new 3D TV at home.

What are active shutter glasses?

Active shutter glasses are the newest type on the market. They are able to filter the light and images in a more advanced way than the other pairs. Each eye only sees what it is intended to see. 3D, when watched for extended periods of time, can cause eye fatigue and strain. Active shutter glasses do not tire your eyes out as much, but they are expensive and require batteries. Imagine how frustrating it would be to run out of batteries in the middle of an expensive show. As well, the cost often prohibits consumers from having a gathering of friends over to watch a great game or movie.

Can you watch a 3D TV without glasses?

There are some 3D televisions being manufactured that do not require the use of glasses to watch. These models are still in the initial stages and will eventually need to be improved. These televisions are shaped in such a way that the eye perceives the images as 3D. Soon, we will be able to watch all of our favorite dramas, horror, action shows, and sports – all in 3D.