An ultra-compact camera the size of a coarse grain of salt was developed by researchers at Princeton University and the University of Washington. This creation could allow small robots to sense nearby surroundings and potentially help physicians detect problems in the human body.
This microcamera has unlimited potential and has overcome past problems, capturing distorted and blurred images with a limited field of view. Now the camera can produce sharp full-color images on a par with a conventional composite camera lens, 500,000 times larger in volume than this microsystem.
• Read more: The world’s smallest camera is the size of a grain of sand
The camera system is dependent on what is called metasurface technology, occupied by 1.6 million cylindrical poles, produced in the same way as a computer chip. In an article in Nature Communications, the researchers reported that this nano-optical image camera (camera) “combines the widest field of view for full-color metasurface operation, while at the same time achieving the largest demonstrated aperture of 0.5 mm at an f-number of 2 “.
Researchers continue to elaborate that “miniaturization of intensity sensors in recent decades has made today’s cameras ubiquitous across many application domains … however, one-size-fits-all cameras could enable several new applications in nanorobotics, vivo imaging, AR / VR [augmented and virtual reality], and health monitoring “.
This development has undoubtedly excited many people, and rightly so! Arrays of thousands of these ultra-compact cameras could potentially be used for sensing the entire scene, essentially turning surfaces into cameras. The coarse-grained camera in question is just half a millimeter wide, with the cylindrical posts each having a unique geometry and functions as an optical antenna.
Each small bar (all 1.6 million cylinders) has different designs that come together to shape the entire optical wavefront correctly, interacting with light combination to produce the highest possible image quality that a microcamera of this size is currently capable of. to.
Aside from a bit of blurring in the edges of the image, this camera performs excellently compared to previous experiments and we can expect to see some phenomenal advances with the use of this camera in modern science and technologies.
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