The smallest camera in the world.

Scientists at the universities of Princeton and Washington in the United States have developed a camera that is the size of a grain of salt and, unlike previous micro cameras, this one is capable of capturing sharp, color images, similar to those captured by a composite camera. conventional but has a volume five hundred thousand times larger.

The key to this advance is in the system called neural nano optics and in their new technology, traditional cameras use a series of curved plastic glass lenses to focus light rays, but the new optical system is based on a technology called meta surface. , which can be produced much like a computer chip.

At only half a millimeter wide the meta surface is studded with 1,600,000 cylindrical posts, each about the size of a virus and each post has a unique geometry and functions like an optical antenna, it is necessary to vary the design of each post to to correctly shape the entire optic front, and to this must be added the help of algorithms based on machine learning that allow the interactions of the poles with the light to combine to produce high-quality, full-color images.

The applications of this micro camera are varied but perhaps the most important is that of medical uses, since it can allow us to see the interior of the human body with robots and systems much smaller than the current ones and thus be able to diagnose and treat diseases more effectively.

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