Passive 3D Technology
This is one of the most commonly used types of 3D technology. A screen with a special layer sends out the images for both eyes to receive at the same time. However, the images are sent out at different angles which each lens then lets through separately. Each eye therefore only receives the appropriate image, the other eye is filtered out.
The technology is less expensive to implement than Active 3D and the polarised glasses required can be replaced easily and relatively cheaply.
Passive 3D TV’s are possibly most suited to anybody who is looking to bring the 3D experience into their home, but has not encountered the technology before. This is because recent feedback has suggested that passive is more comfortable to watch over an extended period such as 2 hours. The glasses are also not as heavy as their active counterparts.
It is a good introduction to the world of 3D and the various visual enhancement qualities that the technology offers. It is the system which is used in cinema theatres around the globe.
Active 3D technology
Active 3D is currently the leading form of 3D technology for homes across Britain. Most of the major television manufacturers have Active 3D TV models either released or due out very shortly for sale in the TV market. The technology works well, but it requires each viewer to wear ‘shutter glasses’ which are heavier and more expensive than the polarised glasses required for passive 3D TV technology.
The technology behind this TV is innovative and complex at times. The screen switches rapidly between showing the image intended for separate eyes. It switches between images, at least 120 times per second, sometimes even more frequently on a number of 3D TVs.
The most distinctive feature of this particular type of technology is the full resolution shown to each eye. Active uses 1080p per eye, twice as much as passive uses. This offers the viewer a sharper picture overall, enhancing the visual quality immeasurably.
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