by SEAN CAPTAIN Jan 12, 2015, 10:54 AM
LAS VEGAS — Cold fusion, perpetual motion and glasses-free 3D: One of these actually
works now. At CES 2015, tech developer Stream TV Networks announced partners that will bring 3D technology to 4K
consumer sets this year.
I gave these 4K 3D TVs a close look for glitches, but found only rare, minor issues that did not hurt the experience.
Like other 3D TVs, these models can also switch to a regular 2D mode, as well as upscale 2D content to 3D. (Of course
you can not see the 3D effect in these 2D photos and videos I shot. But you can see that the process at least did not
hurt the image quality.)
Stream TV/Konka Glasse-Free 3D TV
Stream TV is glasses-free 3D technology is not brand-new. I saw a very similar version of it
at last year is CES. But the annual technology show is full of prototypes; graduating to a real product is
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In 2015, 3D fans in China will be able to buy glasses-free models from Konka (which I got
a chance to try out), Skyworth and Hisense; those in the U.K. will get models from Cello Electronics. Longtime 3D
screen maker (and far from household name) Izon will be supplying the U.S.
However, Hisense currently sells TVs in the U.S., including its popular H4 Roku TV (see
review). Pegatron, a back-end company that makes TVs for several sellers, will also be producing sets with Stream
TV is technology, though it has not said yet for what brands.
Of course, it is a question of how many people will be clamoring to buy a new 3D set. While
the 3D viewing experience has a few fans, it has so far, in some ways, shaped up to be the Zima beverage of
technology — something boosters hope catches on, but that never does.
Pixel-splitting and faux holograms
It might take a degree in optical physics to totally understand what Stream TV is doing,
but the gist is pretty clear, and clever. It takes advantage of the fact that pixels in most LCDs (and other
displays) are made of three subpixels — red, green and blue. All TVs control each subpixel independently in order to
create the right mix of these primary colors to create the right hue. But there is no law saying that a subpixel can
work only with the ones immediately adjacent to it.
The TVs work with 3D games, too.
Stream TV is screens feature lenses that can direct the light coming off each subpixel at a
unique angle, allowing the primary colors from different pixels to converge at a distance in front of the screen. The
company uses 4K/ultra HD screens to provide enough resolution for a convincing image. The other part of Stream TV is
technology is algorithms for driving the process.
To me, the effect looked a bit like a hologram — the nirvana of glasses-free 3D, but one
that is still way too complex and expensive to implement.
Stream is effects are easy to see from multiple angles around the screen. I sat at both the
middle and the end of a couch in front of a prototype, and walked a full arc around a 65-inch model from Konka, with
no viewing trouble. The video had a slight wobbly look if I moved too far and too quickly to the side, but it stopped
once I did.
The only other issue is that the individual pixels became obvious — looking like tiny
orbs — when I got too close to the screen. With Konka is 65-inch set, I started seeing the orbs if I got closer than
about 50 inches. But with a screen that big, that is not a big deal.
A future for 3D?
A 10-inch tablet implementation.
At its CES booth, Stream TV also showed off a prototype 10-inch tablet, which will be its
next product to develop. With such a small screen, the tablet is 1080p resolution was plenty to create a convincing 3D
effect. A representative from stream did tell me, however, that the company is beginning to deploy its tech on
prototypes with 10-inch, 4K LCDs.
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Although glasses-free 3D tech finally works, it may not matter. Consumers did not go gaga
over 3D when it came to TVs years ago. Some A-list TV makers, such as Vizio, have dropped the technology from new
sets; others, like Samsung, include it in higher-end models but often fail to mention it.
Has 3D TV already gone the way of Rome?
Aside from Hisense, the big TV makers are pushing for other advances, especially fuller
color using quantum-dots and other technologies, as well as high dynamic range. Glasses-free 3D does not seem to be a
priority, so it is unclear if many of us will ever get access to it — no matter how well it works.
本信息来自: by SEAN CAPTAIN