3D Glasses

3D glasses have been around for a long time in various forms and were particularly popular in the nineteen fifties. The rise of 3D gaming, high definition television, and blue ray technology, has again brought three dimensional technologies to the fore. It is not yet possible to see these three dimensional images without 3D glasses.

How 3D Glasses Work

3D glasses are based on how we see with our eyes. Simply put a person's two eyes each see things from a different perspective when they are looking at an object or another person, depending on where they are located. The left eye will see one side of an object and the right eye, the other, the brain then takes these two images and puts them together to produce the three dimensional objects and people before us.

The brain needs to see things from two different perspectives so as to appreciate depth. The depth of an image is really what the brain thinks it is, when a person wears 3D glasses, they are given a two eye view from the cinema screen, their television, or a computer monitor.

So 3D glasses turn an essentially flat image into one that appears to come out of the surface, they give the wearer the same perception of depth that the brain provides to the eyes by sending one angle or side of something to one eye, and a different one to the other, the eyes then see these two things together in terms of depth.

Types of 3D Glasses

The earliest form of 3D glasses were invented in 1850 and are known as anaglyphs, they were easy to make and were used to give a 3D effect to photographs and comic books. Some people still use anaglyphs but when used with moving pictures, e.g. in the cinema, they can result in the person having a headache. When you speak of 3D glasses, most people think of anaglyphs.

Infitec 3D glasses were originally designed by Chrysler but have been owned by Infitec since 2003 and were designed to be used for Dolby 3D cinema. These glasses are effective but costly to produce and not designed to be used at home. Polarised light was first invented in the nineteen thirties, it is cheap to produce and works by polarising the two image views, and has proved most effective in cinemas.

LCD glasses are the latest form of 3D glasses and are the type needed to work with the 3D TVs of today. Using active shutter technology these hi-tech LCD glasses synchronise with your television to show you different images in each eye to give the three dimension effect. And by running at a frequency of up to 120 Hz there's no flicker, just an amazing 3D image in front of you.