A lens 1000 times thinner than a hair can provide a wider field of vision for mobile phone cameras

According to foreign media reports, researchers from the San Carlos School of engineering at the University of Sao Paulo have developed a lens 1000 times thinner than human hair in Brazil. It can be used as a camera lens in a smartphone, or in other devices that rely on sensors. < / P > < p > lens is composed of a single nano silicon layer on the nano column array which interacts with light. Structures are printed by lithography, a well-known technology used to make transistors. The lenses, called metallic lenses, were first developed a decade ago and use ultra-thin micro waveguide arrays, known as superglumes, that bend light as they pass through the lens. < / P > < p > according to people familiar with the matter, researchers have long been faced with the problem of minimal perspective. One of the solutions is to combine the sense of metal to form a complex structure. However, based on the recognition that in traditional lens, the increase of refractive index increases the field of view in proportion to the flatness of the lens, so the author designs a metal element to imitate a completely flat lens with infinite refractive index. < / P > < p > this flat lens, which is twice as thin as a human hair, can achieve any field of view, ideally 180 ° without image distortion, which scientists have tested at 110 ° angle. However, in a wider perspective, the light energy will be reduced due to the shadow effect, but it can be corrected by post-processing. The combination of metallens can prevent super-resolution, but the resolution obtained is sufficient for all conventional applications. < / P > < p > the researchers also tested metal elements with a 3D printing camera and obtained high-resolution images with a wide field of view. So far, though, only green has been shot successfully, but in the next few months, researchers will upgrade the lens to make all colors work. Continue Readinggather and watch! Huawei P40 Pro evaluation: excellent mobile phone photography elegant design, do you like it?

Author: zmhuaxia