What are some of the techniques of the 3D glasses?
3D display technology can be divided into two categories: glasses and naked eyes. Naked eye 3D is mainly used in public commercial occasions, and will also be applied to portable devices such as mobile phones. And in the field of home consumption, whether it is monitors, projectors or television, now most of the 3D display devices need to cooperate with 3D glasses.In glasses 3D technology, we can subdivide three main types: color difference, polarization and active shutter, which are called color classification, light spectrum and time division method.
Color difference 3D techniqueColor difference 3D glasses for TVColor difference 3D technology, English Anaglyphic 3D, with the use of passive red - Blue (or red - green, red - green) color 3D glasses. This technology has the longest history, imaging principle is simple, the cost is very low, only a few dollars for the cost of glasses, but the effect is the worst picture 3D. The color difference 3D is used to separate the spectral information from the rotating filter wheel, and the screen is filtered by the filter with different colors, so that a picture can produce two images, and each person can see different images. This method is easy to make the edge of the screen color.Due to poor effect, color 3D technology is not widely used.
Active shutter 3D TechnologyActive shutter type 3D TV, interlaced display, left and right eye imageActive shutter type 3D technology, English for Active, Shutter, 3D, with active shutter, 3D glasses use. This 3D technology in television and projectors above the most widely used, relatively large number of resources, and the image effect is excellent, many manufacturers praised and adopted, but its matching 3D glasses higher prices.Shutter type 3D mainly by increasing the screen refresh rate to achieve the effect of 3D, the image in the frame to form two groups of images corresponding to One divides into two., left and right, interlaced display, while the infrared signal transmitter will synchronize the left and right lenses switch 3D TV control shutter 3D glasses, the left and right eyes can see the corresponding picture at the right moment. This technology can maintain the original resolution of the screen, it is easy to allow users to enjoy the real full HD 3D effect, and does not cause the image to reduce brightness.At present, including Samsung, Panasonic, SONY, Haier, SHARP, Changhong and other brands launched 3D TV, are using active shutter 3D technology.Shutter fault:1, after wearing glasses, brightness reduction;2, 3D glasses opening frequency is affected by fluorescent lights, led to 3D glasses shutter opening and closing with the left and right images are not completely synchronized, there will be crosstalk, ghosting phenomenon, when watching, recommend to turn off the lights;
Polarized 3D Technology (non flash 3D Technology)Polarized 3D TV display imagesPolarized 3D technology is also called polarized 3D technology, English Polarization 3D, with the use of passive polarized glasses. Polarized 3D technology than the color image effect is good, and the cost of glasses is not too high, more than the current theater is also used in this type of technology, but the brightness of the display device requires higher.3D is based on the principle of polarized light vibration direction of the decomposition of the original image, the image is divided into vertical and horizontal polarized light polarized two pictures, then polarized lenses 3D glasses respectively with different polarization directions, so the eye can receive two pictures, and then through the brain synthetic stereo images, display two images on the same screen, two eyes respectively received two half on the screen of the picture to 3D effect will be halved by definition.At present in the polarized 3D system, the market is the mainstream are RealD 3D, MasterImage 3D, Dolby 3D, three, RealD 3D accounted for the highest rate, and is not affected by the type of the panel, can make any 3D function to restore the image of 3D tv. In LCD TV, the application of polarized 3D technology requires TV with more than 240Hz refresh rate.At present, LG, Konka, TCL, Hisense, SKYWORTH and other brands use polarized 3D technology.
