Duke University engineers have created a new generation of lens that could greatly improve the capabilities of telecommunications or radar systems to provide a wide field of view and greater detail. But the lens they fashioned doesn't look anything like a lens. While traditional lenses are made o...
A Fresnel lens is a type of lens developed by French physicist Augustin-Jean Fresnel for lighthouses; a similar design had previously been proposed by Buffon and Condorcet as a way to make large burning lenses. Read more