What is 3D TV
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3D explained
The human eye’s ability to see things with variable depth and wide perspective is based on how the brain processes two separate images, as received by each eye. When someone looks at something the brain is able to merge two separate images together to create a field of vision which is both three-dimensional and allows the viewer to focus on specific areas within any given scene.
3D TV is possible because of a series of major breakthroughs which means that domestic TVs are now capable of processing an image in a way that can deliver the depth information to the brain – much like the human eye – and hence add a further dimension to HD.
How 3D Broadcasting Works
What is 3D TV?
3D TV is a generic term for technology that lets viewers experience TV programs, movies and games etc created with a stereoscopic effect. It adds the illusion of a third dimension, depth, to current TV and HDTV display technology, which is normally limited to only height and width (“2D”).
How can you get 3D from a 2D TV?
A 3D TV screen showing 3D content displays two separate images of the same shot simultaneously, one intended for the viewer’s right eye and one for the left eye. The two full-size images occupy the entire screen and appear intermixed with one another–objects in one image often repeated or skewed slightly to the left (or right) of corresponding objects in the other–when viewed without the aid of special 3D glasses. When viewers don the glasses, they can perceive these two images as a single 3D image.
The system relies on a visual process called stereopsis. The eyes of an adult human lie about 2.5 inches apart, which lets each eye see objects from slightly different angles. The two images on a 3D TV screen present objects from two slightly different angles as well, and when those images combine in the viewer’s mind with the aid of the glasses, the illusion of depth is created.
Will I need 3D glasses?
New 3D TVs require Active Shutter glasses (active liquid crystal shutter glasses) which work by very quickly blocking the left and then the right eye in sequence (120 times per second systems like Panasonic’s Full-HD 3D). The glasses, in addition to the liquid-crystal lenses, contain electronics and rechargeable batteries (typically good for 75+ hours) that syncronise to the TV wirelessly via an infrared or Bluetooth signal.