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upstart writes in with an IRC submission for RandomFactor:

Researchers develop flat lens a thousand times thinner than a human hair:

A lens that is a thousand times thinner than a human hair has been developed in Brazil by researchers at the University of São Paulo's São Carlos School of Engineering (EESC-USP). It can serve as a camera lens in smartphones or be used in other devices that depend on sensors.

[...] The lens consists of a single nanometric layer of silicon on arrays of nanoposts that interact with light. The structure is printed by photolithography, a well-known technique used to fabricate transistors.

This kind of lens is known as a metalens.

[...] "Our lens has an arbitrary field of view, which ideally can reach 180° without image distortion," Rezende Martins said. "We've tested its effectiveness for an angle of 110°. With wider angles of view, light energy decreases owing to the shadow effect, but this can be corrected by post-processing."

Previously metalenses have been limited in their field of view. This lens opens up a much wider range of possibilities.

Journal Reference:
Augusto Martins, et. al.,On Metalenses with Arbitrarily Wide Field of View, ACS Photonics (DOI: 10.1021/acsphotonics.0c00479)

Original Submission

1. "upstart" - https://soylentnews.org/~upstart/
2. "Researchers develop flat lens a thousand times thinner than a human hair" - https://phys.org/news/2020-08-flat-lens-thousand-thinner-human.html
3. "10.1021/acsphotonics.0c00479" - https://doi.org/10.1021/acsphotonics.0c00479
4. "Original Submission" - https://soylentnews.org/submit.pl?op=viewsub&subid=43006

printed from SoylentNews, Researchers Develop Flat Lens a Thousand Times Thinner Than a Human Hair on 2023-07-17 22:53:07