Engineers at the University of Washington and Princeton University have developed the world’s smallest camera, which can capture very clear color images. It is made up of a light-absorbing metasurface, each part of which absorbs light and can be further improved.
It looks like a transparent panel of glass with a white object in a circle. With a modest size of half a millimeter, this invention bends light in such a way that its reflection is complete. An algorithm then forms an image from the data in a signal processing manner.
Surprisingly very transparent and beautiful images have emerged, one of which can be seen at the bottom right. The camera’s sensor was the first to capture a 720-pixel-wide and long-range image that captures images in natural light at a wavelength of 400 to 700 nanometers. 214 lines per millimeter can be seen in it. But this camera can see a 40-degree field view.
The most important aspect of this invention is that it is very easy to manufacture on a commercial scale. The camera sensor contains silicone nitrate and can be extracted with ultraviolet lithography.
According to experts, its most important use may be in medicine and health. In this way, the need for three or four cameras on the back of the phone will be eliminated and it will be possible to make a big camera by attaching them to the entire casing.