3D technology must be no stranger to us. When we go to the movies in cinemas, we often see 3D movies that use 3D glasses to watch. So to learn what 3D technology is? What is 3D TV? Readers, please refer to the following article of Taimienphi.vn.
1. What is 3D TV?
3D TVs use screen technology that allows for a 3-dimensional effect, so that viewers can feel the depth as well as the height and width of the image, and feel like they are real-world objects. .
The technology behind the 3D effect is called stereoscopic imaging. Traditional 3D TVs (and 3D movies) work by displaying 2 separate frames, one for the right eye and one for the left eye, which are combined through the use of specialized glasses. There is also another technology called auto-generating 3D images (autostereoscopic) or auto 3D based on the screen and does not require the viewer to wear specialized glasses.
2. Types of 3D . technology
3D technology is divided into 2 types: active 3D and passive 3D.
2.1. Active 3D technology
Active 3D technology uses glasses with an active shutter, made of liquid crystal and powered by batteries, displaying continuous frames, one for the left eye, one for the right eye, and continuously repeats to create output 3D images.
However, there is a disadvantage that the active 3D glasses are large, heavy and the price is higher than other glasses, users cannot move while viewing, the viewing angle is quite narrow. In return, active 3D technology displays Full HD image quality and is true and sharp.
2.2. Passive 3D technology (polarized)
Passive 3D technology works by displaying both left and right frames simultaneously. Each frame is run through a different polarizing filter, which aligns the light waves into a single direction. When these waves hit the 3D glasses, they counteract the other polarizing filter, filtering only the image in each eye, so the left eye only perceives half of the image and the right eye sees the other half.
The downside is that the image quality of passive 3D technology is not very perfect. This technology uses a primitive technique that does not allow the display of depth like active 3D technology, as well as blurry image quality.
In contrast, polarized glasses used in passive 3D technology are very cheap, light in size and do not need to be charged, so passive 3D is becoming the current trend.
3. What brands produce 3D TVs?
In November 2010, Toshiba launched new 3D TV models based on technology that automatically generates 3D images. The Toshiba TV screen displays 9 separate images per 2D frame. Currently Toshiba 3D TV screens are only available in 12 and 20 inch sizes.
Due to bandwidth limitations, cable and satellite based systems are not yet capable of broadcasting 3D programs and movies, although the number of 3D programs and movies is constantly increasing.
In addition, all popular TV screen technologies including LCD, LED, OLED and plasma have built-in 3D capabilities. Some of the popular brands that make 3D TVs include: LG, Mitsubishi, Panasonic, Samsung, Sharp, Sony, and Toshiba.
4. Should you buy a 3D TV?
Basically, 3D TVs give viewers a stereoscopic experience, and it feels like objects in movies and shows are real-world objects.
However, the current 3D content sources are not many and not popular, plus the image quality is not high. Therefore, it is not advisable to invest large amounts of money to buy high-end devices such as 3D TVs. If you want, you can wait until 3D content is abundant and the price of 3D TV products has cooled down.
So, in the above article, Taimienphi.vn has just introduced you to what is 3D TV? Hopefully, after this article, readers will have a closer look at 3D TVs and current 3D technologies. Besides, 4K TVs are also popular today, find out more information about TV 4K here.