Thin lens equation and problem solving | Geometric optics | Physics | Khan Academy
Physicists have developed a way to form the aspherical surfaces of optical lenses that can completely eliminate the problem of blurring at the edges..
More than 2 3,000 years ago, the Greek scientist Diocles discovered this undesirable effect and suggested that distortion arises from a change in the angle of incidence of light on a spherical lens, as a result of which it does not focus. Since the development of analytical tools to describe a problem in the 20th century, researchers and engineers have come up with different ways to solve it for specific devices and tools. Although the old decisions to change refractions were, based mainly on aspherical lenses, helped, but were expensive but not were universal.
Recently, three physicists from the National Autonomous University of Mexico and the Monterrey Institute of Technology have proposed a solution to the lens problem. It consists in describing the method of forming aspherical lens surfaces taking into account the distance between the object and the image. In fact, it is based on the fact that the second surface corrects the problems of the first, eliminating its spherical aberration..
After creating a long mathematical formula, the team tested it. Simulations have shown that the proposed solution will allow the manufacture of lenses with an accuracy of 99.9999999999% for a variety of attachments, including glasses, contact lenses, telescopes and microscopes..
Recall that earlier engineers have developed a camera that is capable of shooting objects at a distance of up to 45 km even through the city smog.
text: Ilya Bauer, photo: National Autonomous University of Mexico, silaslova