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With the current interest and development of
3D televisions and programs, many people are beginning to grow more curious
about the technology behind it. This article will explain how the glasses allow
you to see in 3D. And, with one exception, you won't encounter any technical
jargon. So, read on to get a clear and easy-to-understand explanation of how 3D
glasses work.
The military uses 3D glasses from the
harsh realities of battle simulation to the more practical applications of
mechanical repair
NASA uses 3D
glasses in aerospace research. Automotive industries use 3D Glasses to test and
improve vehicle safety in a variety of circumstances.
Doctors use 3D
glasses to simulate laparoscopic surgery, which involves invasive techniques
with limited vision to the surgical area.
The virtual
reality that is produced by the 3D Glasses in combination with other external
sensory equipment and techniques is the system that is producing far-reaching
effects in the environment we live in today.
We naturally see the world in 3D, so it only makes sense that giving a
sense of depth to any movie we watch on a 3D-TV at home will add to the
experience if done well, or movie we watch in a cinema. If you've seen Avatar,
you've seen the power of 3D when used to help plunge the viewer into a story.
Previously, 3D effects were used more for "shock" value, where
objects appeared to come towards you out of the screen. This was probably to
distract your attention away from the fact that using the traditional cardboard
red/blue glasses impaired the color resolution of what you were watching!
Now, with the widespread use of polarized glasses in cinemas, the 3D
effects can be seen while retaining a full color palette, as was demonstrated
in the jaw-droopingly beautiful Avatar world of Pandora.
So, in the past you would've experienced 3D special effects that only
added "shock" value to a movie, but now 3D is being used in more
subtle ways to increase your immersion in the movie and strengthen the
storytelling. The technology has changed, and so have the glasses.
The passive polarized glasses don't use a battery, don't need recharging
and are much cheaper. Obviously, when you can get a pair of glasses with a
cinema ticket AND get to see the movie, the glasses can't be very expensive!
It's a common misunderstanding that all 3D TV's use only the heavier
"Active Shutter Glasses" which look like a techno-geeks idea of cool
shades, require recharging and will be quite expensive. There are a few
manufacturers promoting those glasses such as Sony and Samsung, but there are
others such as LG promoting the same "passive" polarized glasses that
you get in the cinema.
The current batch of 3D-TV's being
released all require you to wear glasses of one kind or another. The technology
already exists to show 3D images without needing to wear glasses, but it's not
ready for primetime yet. It's very expensive, so limited to the
"commercial" sector, and has only a few viewing angles where the 3D
image works. Also, the 3D effect can't be turned off on a 3D glasses-free TV,
so you'd have to use it as a dedicated 3D display, and with the current amount
of 3D content, it's not likely that people will want such a display any time
soon. However, looking ten years into the future, it's a distinct possibility
that 3D TV's will all be "glasses free".
