Scientists in Brazil have succeeded in developing metalens-type flat lenses that are thousands of times thinner than human hair. The lens can have unlimited uses today.
The cameras we use today are home to lenses with a much finer structure than in the past. However, even these lenses seem too thick for the lens you will soon hear. Researchers at the São Carlos School of Engineering in Brazil, a lens thousands of times thinner than a human hair they managed to improve.
The article on the lens that scientists managed to develop was published in ACS Photonics. This lens, developed according to scientists and beyond ultra thin, on smartphones or other devices that rely on sensors can be used. According to Emiliano Rezende Martins, who was involved in the study, this lens has an unlimited usage area according to today’s technology.
It went beyond the viewing angle metalens offered:
Developed by scientists in Brazil, the lens is located on nanopost arrays that interact with light. single nanometric silicon It consists of layers. The lens, which has a structure so thin that our eyes cannot see, was printed with the photolithography technique used in the production of transistors.
The type of lens we see is known as the type of metalens that provides the highest resolution physically available. Metalens have had a major problem to date, according to Rezende Martins. Angle of view of this type of lens Was less than 1 degree.
But Rezende Martins and his team were able to overcome this problem by combining metalens with complex structures. The lens developed by scientists mimics lenses that are completely flat. In addition, the flat lens in the developed lens, unlike conventional lenses to infinite refractive index had.
The physically imprinted lens at this time, without any image distortion 180 degree viewing angle can reach. However, the higher the viewing angle, the less energy of the light due to the shadow effect. However, this situation can be eliminated with the adjustments made in the image. The developed lens can only take pictures in green for now.