Tom Cruise used a series of high-tech ray ban with camera, transmitting the image and displaying confidential informations in the movie "Mission Impossible". Today, the analogous high-tech glasses will bring the Gospel to hundreds of millions of visually impaired people. U.S. scientists have developed a kind of liquid crystal zooming spectacles, you need simply adjust the knob on the frame to change the focal length to obtain a better vision than normal people. Scientists have predicted that this technology will open the door to development of intelligent glasses. This latest technology is the invention of the University of Arizona USA and it has now been delivered to the state Academy of Science for invention identification.
The biggest difference between liquid varifocal glass and average glass lies in the lens. Lenses of myopia glasses and hyperopia glasses on the market are mostly glass and resin, which means that they will have only a fixed focal length. If the visual acuity is getting better or worse, the user would have to buy new lens. The liquid crystal ray ban sunglasses lens consist of two ultra-thin glass-coated liquid crystalline. These crystals are exactly the same as LCD computer monitors on the crystals. Through the crystal transparency and focusing ability by changing the strength of current flowing passed through the liquid crystal, so the crystal molecules can be rearranged.
Inventors said that the liquid crystal lens is a concentric structure in the identification paper. Liquid crystal inside the lens will occur contraction or expansion deformation in less than one second when the weak electric current pass through the lens. Thus changing the thickness of the various locations of the crystal layer, thereby changing the lens focal length.
In the trial, the model who wears such glasses can not see the picture being 30 cm far away from him. But by adjusting the knob on the frame, the focal length of liquid crystal glasses has changed, he can clearly see the final model image. In the tests among ordinary people, such glasses have also achieved good results.
Scientists predict that one day, the technology will take the place of all other glasses which are made to make up for eyesight deficiency. The liquid crystal lens can obtain a variety of different focal length effects by adjusting the current strength. This means it can freely switch from the myopia to hyperopia mirror functions. When the current on the lens was turned off, the liquid crystal would form the even thickness. It is a pair of plain lens.
Inventor believes that this technology will at least replace the current widespread use of bifocal glasses. In addition, glasses made by this technology will be particularly suitable for the drivers in the future to increase the driving safety. New products will be absolutely no need to adjust manually and become a real smart ray ban online if we combine this technology with automatic control the strength of current technology.