Tag: Glasses-free3d
Samsung shows off 55-inch glasses-free 3DTV prototype
by admin on Mar.17, 2011, under Tech News
Samsung’s 55-inch 3D LCD TV viewable with the naked eye
When in 2D mode, it can be used as a “smart TV.”
Samsung Electronics Co Ltd exhibited a 55-inch 3D LCD TV viewable with the naked eye at FPD China 2011, which is taking place from March 15 to 17, 2011, in Shanghai, China.
When a 3D image is being displayed, the number of viewpoints is nine, and the optimal viewing distance is 2.5 to 6m.
The new 3D LCD TV has a function to switch between 2D and 3D modes. The TV is equipped with an LCD panel whose optical refraction index can be changed in front of an LCD panel used for displaying images.
The first LCD panel functions as a lens and shows different images to the right and left eyes. And when the optical refraction index of the first LCD panel is not changed, the TV shows 2D images.
The specifications of the LCD panel for displaying images are as follows. Its pixel count, brightness and contrast ratio are 1,920 x 1,080 (full HD), 500cd/m2 and 4,000:1. It uses a direct-lit CCFL (cold cathode fluorescent lamp) backlight unit.
“This is just a prototype,” a Samsung staffer said. “We can replace it with an LED backlight unit.”
As for when it will be commercialized, the staffer said, “We have not decided it yet, but it will take about three years to commercialize it.”
By : Tech-on!
Rockchip’s Supernova x1 tablet does 3D without 3D Glasses !!
by admin on Aug.26, 2010, under Handheld Devices, Tech News
You had to know that Nintendo’s 3DS wouldn’t be the only glasses-free 3D handheld for long. Our Chinese compatriots caught sight of a prototype device from Rockchip called the Supernova x1, performing some similar lenticular trickery to make images appear 3D. Exactly what display tech it uses remains a mystery, but we’re told the Disney footage being displayed had to be “processed” in some way to make it appear 3D. Like the 3DS, the 3D effect here can be adjusted or disabled entirely, but that’s really all that is known at this point about this mystery tablet/PMP. Sit tight, though: everything should be revealed at IFA in a week’s time.
By Engadget China
DoCoMo new 3D Glass-less LCD will put Sharp out of business.
by admin on Jul.14, 2010, under Tech News
![[Wireless Japan 2010] DoCoMo new 3D Glass-less screen will put Sharp out of business.](http://www.akihabaranews.com/wp-content/uploads//images/1/31/54331/1.jpg "[Wireless Japan 2010] DoCoMo new 3D Glass-less screen will put Sharp out of business.")
Thought that Sharp’s 3D Glass-less LCD was cool? Well just wait to hear what’s DoCoMo has schedule for us for next year… Pretty much similar to what we have seen before, DoCoMo’s technology goes beyond what Sharp is offering today. Indeed, Sharp 3D monitor, the same one installed on the 3DS will work well only if you are perfectly in front of the monitor… If you move a few inches on the left or right your will immediately loose the 3D effect and will have to get back just in front of your monitor… Pretty annoying indeed while playing.Now DoCoMo’s approach is pretty similar, but uses 8 Lenticular lens at the same time to give you perfect 3D rendering even if you are not perfectly in front of the monitor, and offer you around. Thanks to 4 of these lenticular lenses, DoCoMo is capable to give you a 30 degree view angle and perfect 3D within this view angle.So far this works only if you are tilting your head horizontally, but DoCoMo is working on enhanced this technology to give a wider view angle and to be capable to get this on both axis (Vertical and Horizontal).This Technology is still at the Concept level, but DoCoMo hope to release a device using this technology within a year or two. Also, the engineer who made the demo for us, underline that a 1GHz (Snapdragon) powered mobile phone with an integrated GPU will be enough to be able to use this 3D monitor and technology.
By Akihabara News
Toshiba’s LCD Panel Displays 2D, 3D Images at Same Time
by admin on Jun.04, 2010, under Tech News
Toshiba’s new LCD panel
Toshiba Corp developed an LCD panel that can partially convert a 2D image to a 3D image and can be viewed with the naked eye.
The LCD panel was announced at SID 2010, the largest international conference on display technologies that took place from May 23 to 28, 2010, in Seattle, the US.
The LCD panel is compatible with the “integral imaging method,” which the Toshiba Group has been developing, and has nine viewpoints. Its screen size is 12 inches. The pixel count is 1,400 x 1,050 for 2D images (full screen) and 466 x 350 for 3D images (full screen).
The panel displays 3D images by using the “GRIN (gradient index) lens,” which changes the distribution of refraction indexes by controlling the gradient (orientation) of liquid crystal molecules.
The prototyped panel is equipped with an LCD panel that generates the GRIN lens and is positioned in front of the LCD panel used for displaying images. When the power of this second LCD panel is off, the refraction index does not change and light passes in a normal way, showing a 2D image. When the power is on, the liquid crystal molecules are aligned in a radial pattern in parallel with the electrodes arranged like stripes in the vertical direction. And they work as lenses to show 3D images.
It is possible to show 2D images and 3D images at the same time by partially turning on the second panel.
However, the liquid crystal layer of the panel equipped with the GRIN lens (the second panel) is 150?m thick, which is several tens of times thicker than that of a normal LCD panel. And it considerably slows the response speed. Therefore, the power of the prototype’s second panel is always on.
Toshiba added another (third) LCD panel that can change the polarization of light by 90° between the two panels, whose transmittance is about 90%, to switch between 2D and 3D images at a high speed.
By Tech On
