How does 3D technology

28 March 2013 | In Tips | 1,4 thousand views | By

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Hoje é comum encontrar discos Blu-ray ou cinemas que oferecem filmes em alta definição com technology 3(D). But you know what I mean this 3D and why he makes movies "artifacty"? Neste texto explicarei como funciona esta technology, straightforward manner, and show what are the different types of 3D that you can find, based on a presentation of the website

Tecnologia 3dBasically, the 3D is an optical illusion. In the real world we see objects in three dimensions (length x height x depth) because our eyes can focus on different perspectives because they are away from each other. But how to reproduce this effect on a screen that is two-dimensional (length x height), as the TV, for example? For this it was thought in separate images to each eye sees, to simulate the natural effect. There are four main standards:

Anaglyph -This pattern is the most common, that uses those famous red and blue colored glasses. Each lens filters that will be passed in the eye and just gets the image that reflects that color. With these two different images, the brain is able to see the depth of the image. But this pattern is considered detrimental to long exposure times, causing nausea and headaches. Is no longer used in new movies.

Polarized -Also called passive, This model is the most common in today's movies. Funciona tanto em computers quanto cinemas (but it requires some additional equipment). In this pattern the imagery are designed slightly different angle joint. Like this, the glasses use "polarizing filter" so that each eye sees a different image. The glasses don't have colored lenses.

Active -Still not very common, This pattern may represent the future of 3D technology. Uses a smart glasses, electronically controlled, that synchronizes and filters the images dynamically. Cada imagem é exibida em sequência e não ao mesmo tempo como nos other padrões. So there are TVs with over 100 Hz frequency, with 60 Hz would be enough to see an image. High frequency allows you to use the same time to display two completely different images, so rapidly and transparently.

Parallax Barrier – This is the most interesting of all, because it dispenses with the use of glasses. In this pattern, a barrier is placed on the screen, This being a filter that splits the images at different angles. In this way, by natural eye distance, each one of them will see a distinct image, generating the three-dimensional effect and without causing side effects.

In brief, in Brazil, will be a reality 3D technology in television we see today. Television offerings on this technology will be increasingly common. Therefore, before buying, Remember each pattern that exists and was quoted above. Watch your movies and good fun!

Source: Paraná Newspaper Center

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