Why is there such an issue with 3D TV? Why can’t we have a screen that makes it 3D already?
Posted: October 28th, 2010 | Author: admin | Filed under: Common Questions | Tags: already, can't, issue, Makes, Screen, such, there | 4 Comments »I’ve read some articles about the new 3D TVs that may be coming out, but my only question is why can’t they make the actual screen, the material for what makes the TV 3D? Or have an attachment that you place over the TV screen to make it pop 3D? So you won’t worry about having any shortage of 3D glasses… Does that sound stupid?
New technology to sell more electronics. I just bought
2 high def TV’s (plasma, 120hz LCD) and don’t need
to waste more on another one, I have heard nothing
of any attachment, also there is not much 3d content
out. You can still use your TV with the glasses to watch
it decently. It won’t be until 10 years when there will be
tons of 3d content. HD has been around for a while now
and I only get 40HD channels and 300SD channels still
with my cable.
The screen isn’t the issue in 3D. The problem is how to present the left and right camera views so that they are only seen by the left and right eye.
In movie theaters, it is done with different polarizations in the projectors and the eyeglasses. That won’t work on an LCD TV, but could work on a rear-projection system like a DLP. The preferred approach seems to be using active shutter glasses that are synchronized with the refresh rate of the screen
Do you mean a 3d tv that does not need glasses for the 3d effect? Actually there is one. Phillips has something called wowvx that allows people to view a 3d tv without glasses. They have slowed down their investment in it right now until home 3d becomes more available. Right now the main 3d format television companies are going for is field sequential that uses the shutter glasses, although there is a polarized tv that jvc is making, model GD-463D10 that uses the polarized 3d glasses just like they have in theaters. Not sure why more companies aren’t doing polarized televisions.
Now a regular tv can’t just do these 3d formats. The tv has to have double images of everything, one for each eye. Then each image has to have a different light wave or flash on the screen at different times like they do for polarized and field sequential. A tv can’t just do that, it must be made to do that or have equipment you hook up to force it to do that. It can only do anaglyph 3d that uses the red and blue glasses because it uses those two colors to do the 3d effect. Blocking the double images so each eye only gets one by having each image red or blue.
Well, there are several different types of 3D TV so for now yes, you must wear 3D active shutter glasses in order to view 3D TV. However, Philips and LG are developing a 3D TV that doesn’t require glasses to come out in 2011. TCL also just unveiled a 3D TV that has a rippled screen instead of requiring glasses at the CES that will be available in 2011. So they are working on it. The only problem is that sometimes with these tvs you have to be sitting in a certain “sweet spot” in order to see the 3d effects of the screen. http://www.3dtvinformation.com has some more information on it too.