In the movie "Mission: Impossible", Tom Cruise used a series of high-tech glasses possessing the ability of videography, transmitting image and displaying confidential information. Today, a similar high-tech glasses will bring the Gospel to millions of visually impaired people. The liquid varifocal glass developed by American scientists can change its focus only by adjusting the button on the frame to obtain a better vision than a normal person. The scientists predict that the technology will open the door to develop intelligent glass. The latest technology, invented by Arizona university in the USA, has currently been turned over to the scientific academy of the state for invention identification.
The biggest difference between liquid crystal glasses and ordinary glasses is on the lens. Whether it is a nearsighted glass or a farsighted one on the current market, the lens tends to be a solid glass and pitch, which means they only have fixed focus. The user would have to buy a pair of new glasses if the visual acuity become worse. But lens of the liquid crystal eyeglasses online are made up by two ultra-thin glass-coated liquid crystalline. These crystals are exactly the same as LCD computer monitors on the crystals. By changing the strength of current flowing through the liquid crystal, the crystal molecules can rearrange, thereby changing the crystal transparency and focusing ability.
In the identification thesis, the crystal in the lens is a concentric structure. 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 change thickness of the crystal layer in various positions, thereby change the lens focal length.
In the trial, the model can not see the image of 30 cm away by wearing such glasses. The model can see it clearly at last by adjusting the knob on the frame, so that the focal length of liquid crystal glasses changed. Such glasses have also achieved good effect in the test for ordinary people.
Scientists predict that one day in the future, this technology may replace all glasses that remedy visual impairment. By adjusting the current strength, the liquid crystal of the lens can transform a variety of different focal length effects. This means it can freely switch from the myopia to hyperopia mirror functions. It is a plain mirror when the current of the lens was closed and the liquid crystal formed a even thickness.
The inventor believes that this technology will be at least replace the bifocal glasses that has been currently widespreaded. In addition, glasses made by this technology will be particularly suitable for the drivers in the future to increase the driving safety. If combined with the technology of controlling the current automatically and the new products will be absolutely free from manually operation to become the real smart eyewear.
没有评论:
发表评论