3D TV Without Glasses Technologies :
1. Parallax Barrier Technology
Parallax barrier 3D TVs work by using tiny lenses which are integrated into the TV screen - layered liquid crystal displays. Each layer contains small stripes that hide specific pixels so that some can only be seen by your left eye, while other pixels can only be seen by your right. The result is the two images our eyes need to see to send a 3D image to our brains. With the lenses being built into the screen, there's no longer a need for 3D glasses. The biggest drawback is that parallax barrier only works if the viewer remains in the same spot, hence the reason why the early Toshiba sets are on the small side. Screen brightness is also a possible problem.
2. Lenticular Lens Technology
Another method of delivering no glasses 3D TV is by the use of lenticular lenses , which are shaped and designed so that a different image is displayed to each eye depending on the viewing angle. This is achieved by building small lenses on to the display screen and then refracting the left and right images that are emitted. This gives slightly less reduction in brightness than parallax barrier displays and a wider range of viewing angles.
3. Head Tracking 3D Technology
Head tracking works by using a webcam that locks on to a viewers eyes and adjusts the images sent from the display as the viewer moves so they see in 3D. Clearly this only works for one viewer at a time and seems best employed with small screen devices such as mobile 3D TVs or laptops. In fact a Toshiba 3D laptop has already been demonstrated using this technology.
4. The 3D TV Box
The 3D TV Box is another recent development in 3D TV without glasses technology. The Hungarian company iPont originally demonstrated a Tridelity 65 inch LCD 3D autostereoscopic 3D combined with the prototype version of their 3D TV Box. The technology works by taking a standard 3D image and transmitting it to the Box to be displayed. The 3D TV Box takes the image and projects it on to the TV display at the same depth you see when using 3D glasses on most 3D sets, and can take content from Internet, satellite, cable or any other services that currently offer streaming 3D content solutions.
There were some limits in viewing angles, which is to be expected, but in general the technology offers no worse results than any others seen so far and in fact does offer an improvement in quality to the extent that the depth of imaging at least equalled that achieved with glasses. There was an added bonus achieved in brightness because glasses are not being used.
Since their first demonstrations, iPont have continued a push forward with their promising technology, aiming to show that it's reaching a good level of maturity and hence acceptability to a buying public who are keen for without glasses 3D TV.
IPont seem to be working towards pushing their Box solution into venues such as shopping centres and airports, plus other entertainment venues such as sports bars and amusement parks.
5. The MIT Massachusetts Institute Of Technology Solution
Known as the HR3D development, this concept was first shown at at the SIGGRAPH Asia graphics conference in 2010. The technology works in similar fashion to the double LCD layer used in the Nintendo 3DS. Researchers at MIT have demonstrated a prototype where the top LCD can display an image which is customized to the one shown on the bottom layer.
6. Sony's OLED 3D TVs
Manufacturing giant Sony has long range plans to produce a no glasses 3D TV solution using OLED TVs. These promise to produce enhanced picture quality - around four times that of regular HD - which takes less power too. Sony claim to already have without glasses technology ready in their camcorders, and rumors are they'll be ready to deliver commercially viable 3D TV models within a few years. They're focusing on OLED as the technology that will become prevalent in TVs in coming years.
The Disadvantages Of 3D TV Without Glasses: For parallax barrier viewing to work, one of the drawbacks is that the angle from which you watch the screen and your distance from the screen can be critical. So, to get a full and high quality effect you need to be sitting directly and squarely in front of the TV at the optimum viewing distance.
Parallax barrier 3D TVs work by using tiny lenses which are integrated into the TV screen - layered liquid crystal displays. Each layer contains small stripes that hide specific pixels so that some can only be seen by your left eye, while other pixels can only be seen by your right. The result is the two images our eyes need to see to send a 3D image to our brains. With the lenses being built into the screen, there's no longer a need for 3D glasses. The biggest drawback is that parallax barrier only works if the viewer remains in the same spot, hence the reason why the early Toshiba sets are on the small side. Screen brightness is also a possible problem.
2. Lenticular Lens Technology
Another method of delivering no glasses 3D TV is by the use of lenticular lenses , which are shaped and designed so that a different image is displayed to each eye depending on the viewing angle. This is achieved by building small lenses on to the display screen and then refracting the left and right images that are emitted. This gives slightly less reduction in brightness than parallax barrier displays and a wider range of viewing angles.
3. Head Tracking 3D Technology
Head tracking works by using a webcam that locks on to a viewers eyes and adjusts the images sent from the display as the viewer moves so they see in 3D. Clearly this only works for one viewer at a time and seems best employed with small screen devices such as mobile 3D TVs or laptops. In fact a Toshiba 3D laptop has already been demonstrated using this technology.
4. The 3D TV Box
The 3D TV Box is another recent development in 3D TV without glasses technology. The Hungarian company iPont originally demonstrated a Tridelity 65 inch LCD 3D autostereoscopic 3D combined with the prototype version of their 3D TV Box. The technology works by taking a standard 3D image and transmitting it to the Box to be displayed. The 3D TV Box takes the image and projects it on to the TV display at the same depth you see when using 3D glasses on most 3D sets, and can take content from Internet, satellite, cable or any other services that currently offer streaming 3D content solutions.
There were some limits in viewing angles, which is to be expected, but in general the technology offers no worse results than any others seen so far and in fact does offer an improvement in quality to the extent that the depth of imaging at least equalled that achieved with glasses. There was an added bonus achieved in brightness because glasses are not being used.
Since their first demonstrations, iPont have continued a push forward with their promising technology, aiming to show that it's reaching a good level of maturity and hence acceptability to a buying public who are keen for without glasses 3D TV.
IPont seem to be working towards pushing their Box solution into venues such as shopping centres and airports, plus other entertainment venues such as sports bars and amusement parks.
5. The MIT Massachusetts Institute Of Technology Solution
Known as the HR3D development, this concept was first shown at at the SIGGRAPH Asia graphics conference in 2010. The technology works in similar fashion to the double LCD layer used in the Nintendo 3DS. Researchers at MIT have demonstrated a prototype where the top LCD can display an image which is customized to the one shown on the bottom layer.
6. Sony's OLED 3D TVs
Manufacturing giant Sony has long range plans to produce a no glasses 3D TV solution using OLED TVs. These promise to produce enhanced picture quality - around four times that of regular HD - which takes less power too. Sony claim to already have without glasses technology ready in their camcorders, and rumors are they'll be ready to deliver commercially viable 3D TV models within a few years. They're focusing on OLED as the technology that will become prevalent in TVs in coming years.
The Disadvantages Of 3D TV Without Glasses: For parallax barrier viewing to work, one of the drawbacks is that the angle from which you watch the screen and your distance from the screen can be critical. So, to get a full and high quality effect you need to be sitting directly and squarely in front of the TV at the optimum viewing distance.
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