The human body has two eyes, their visual range is not consistent, it will be slightly different, this is known as visual displacement. And in contrast to the visual brain after displacement makes us feel the difference "depth of field", that is, objects near and far with our distance. The three-dimensional display technology is based on the human visual deception of this physiological function, use two slightly different picture of the brain interview mistake we see is a certain depth of 3D images.
Depending on the implementation, the three-dimensional display technology is divided spectrally separate, time-division and polarization beam shielding three.
Spectroscopic spectrum technique is a very inexpensive, simple picture book child often printed in red and green with two colors, you can see a stereoscopic image by a certain band of the left and right eyes of different colors represented, which is spectrum spectrophotometry. This low-cost technique, but since the color filter to be occluded part of the glasses, so the color display screen is poor, only suitable for application books, newspapers, magazines and other less demanding, not suitable for dynamic video.
Polarization splitting complex, we know that each of the light having the homogeneity, that is to say all directions lightwave having the same amplitude and period. However, by filtering, we can obtain a one-way light wave amplitude, which is to use this feature 3D movies, the two kinds of video sources are slightly different in different directions for the video amplitude optical wave combiner. Watching, we need to put on polarized glasses, that is, the left lateral amplitude only allowed to watch the video and the right eye can only watch video vertical amplitude of the brain being deceived, they will tell us to see objects owned depth of field. This post-processing technology is too much trouble, the cost is relatively high, so until now only 3D cinema will be adopted, and almost missed the individual user.
Divisionally light blocking technique (also called active shutter technique) is a relatively simple technique, which uses according to characteristics of the display frame playback, the left-eye video display odd frame and the even frame of the right eye video is displayed, then using a liquid crystal glasses, eye shield in the odd frame, the left-eye shield even frame, so that both eyes see a different image, generates the same three-dimensional feeling. Since this technique without loss of color during playback, the picture has a high reduction, coupled with the relatively low technical threshold, it has been the main way of individual three-dimensional image technology. Most projector uses a time-shading technology, but because of differences in equipment, so these types of products in specific implementation or in slightly different. In sum, no matter what the technology, all by tricking the eye, the left and right eyes get different visual signals to achieve.
3D TV is how to make you feel the 3D effect? - fans deer answer - know almost