What are the principles of 3D TV and 3D glasses?
With the principle of polarization of light, polarized 3D is based on the principle of "light vibration direction" to the decomposition of the original image, the image is divided into a pair of odd and even lines with the 4/1 polarizing film will be odd and even lines in the picture are left circularly polarized light and right-handed circularly polarized light transmission. 3D and polarized lenses respectively with different glasses polarization rotation direction, so the eye can receive 2 pictures interlaced display, through the brain stereo image synthesis
Passive polarized 3D TechnologyPolarized 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 a pair of odd and even lines with the 4/1 polarizing film will be odd and even lines in the picture are left circularly polarized light and right-handed circularly polarized light transmission, polarized lenses and 3D respectively with different glasses the polarization direction of rotation, so that people around the eyes will receive 2 pictures interlaced display, through the brain stereo image synthesis.At present in the polarized 3D system also variational polarization and polarization splitting into two points, in the film market is the mainstream RealD 3D is the use of the variable polarization technique, this technique avoids ordinary polarization splitting technology to reduce 2D picture clarity (PR Film black and 3D picture effect phenomenon) interlaced display can only reach half the height of the 1080 line defects. Through the perfect polarized Full HD picture quality. However, this technology has not yet been used in the market of TV products, only in the cinema. The market in the sale of polarized products are polarized light products, there are some defects in the image definition and 3D effect.
People's vision is able to distinguish between the far and near, is the gap between the two eyes. The eyes of the people apart about 5 cm, two eyes in addition to the front of the front, to see anything, the two angles are not the same. Although the gap is very small, but the retinal to the brain, the brain with the small gap, produce distance depth, so as to produce stereoscopic effect. Although an eye can see objects, but the distance between objects is not easy to distinguish. According to this principle, if the same scene, create two images with two eyes from the perspective of the gap, and then let the two eyes, one on each side, each side to see their images through the retina can cause the brain to produce three-dimensional depth of field. A variety of three-dimensional presentation technology, but also the use of this principle, we call it the principle of polarization".In the optical 3D technology, we can subdivide the three main types: color type, passive polarization, active shutter type, which is commonly referred to as the color method, optical method and time division method.Color 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.
