Q.  What is 3D TV?


A developed  technology of viewing a Movie, in realistic depth, with amazing optical effects. The illusion of viewing 3 Dimensions is created in such a way that the left and right eyes see different images. Though technology is progressing rapidly, this current viewing process still requires the wearing of glasses to make each eye react accordingly.

The UK's first dedicated 3D TV channel is scheduled to be seen courtesy of Sky during 2010.

However, 3D movies is nothing new as the technology was first developed in the 1930's, seeing some popularity in the cinemas during the late 1950's and resurected again in the 80's.


Q.  Are all 3D TV systems the same?


Unfortunately, NO. There are various ways of retrieving 3D images

The most common format shows two images where glasses filter out the appropriate colour images. The red lens filters out red images and only shows blues ones. Ultimately the blue lens filters out the blue images and only shows the red ones.


Q.  How many systems of 3D TV are there?


Two different systems will be available during 2010 - Passive and Active - both requiring a separate pair of glasses.

Without being technical, below will briefly and hopefully explain the basic differences.

The ACTIVE system requires glasses that alternatively block each eye in sync with the TV picture. Being different images in each eye, so fast is the switching that the brain basically sees a complete with depth as it was intended when filmed by special 3D camera confurations.

The PASSIVE or polorised system TV is the result of both left and right images transmitted onto the TV screen at the same time and a special filter built within one of the glass substrates polorises the left and right images differently. The specific Passive 3D glasses then reverses this and filters the images to ensure the correct image is in the appropriate left or right eye then the brain perceives an image of depth. 


Q.  What are the different types of 3D glasses?


Though there are three glasses formats, as explained above, there are two main types of quality glasses required when watching different systems of high quality 3D - ACTIVE and PASSIVE.

ACTIVE Glasses
Activated by the programme source, these contain working lenses that alternate with a black-out procedure per left and right eye. So quick is this action that the brain does not see such action - similar to not seeing the oscilating flicker on your current TV - but basically it is like a rapid shutter effect alternatively with the left and right lens.

As you would expect, this mechanical device of glasses requires a power source so hence powered by small Lithium batteries. With such technology in a pair of glasses, they come at a cost so care should be taken to keep safe as replacements can cost in excess of £100.


These are simply a polorised system to separate the images from the left and right eyes.
All the work is basically done via the polorised filter screen TV and the brain. Hence the glasses are lenses manufactured to filter out and block the images from opposite lenses, for example, the right lens blocks and filters the left image and the left lens blocks and filters the right image. That said, as with normal spectacles, unlike Active glasses, there is no power required. 

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  THERE ARE THREE GLASSES FORMATS [Image courtesy of Panasonic Europe]