In the famous English movie 'Star Trek', the doctor puts a camera on your chest, and the computer makes a hologram of your heart and blood vessels. The doctor enlarges the image and takes a look at some of your smaller capillaries to see the finer details.
Until now, this has only been possible in movies, but researchers at the McCormick School of Engineering at Northwestern University have developed a new high-resolution camera that captures everything from the most complex and fuzzy objects to the inside of the human skull worth to see.
The team has developed a prototype technology that, in simple terms, is a new holographic camera that can capture images of invisible places.
The results of this technology have been published in the journal Nature Communications, with author Florin Williams explaining: May be able to see from the point of view of This technique turns the walls into mirrors.
This is the field of science known as non-line of site (NLoS) imaging, and in the age of self-driving cars and modern medical advances, this is great news. They work in a very simple way using visual sonar: they send a pulse of light and measure how much it has changed by the time it returns.
"If you can capture the entire light field of an object in a hologram, you can completely recreate the three-dimensional shape of that object," Volumtzer added. We make this holographic imaging with artificial waves instead of ordinary light waves.
This goes far beyond the researchers' first attempt to develop NLoS techniques, but existing technologies always face a few hurdles, including low-resolution imaging, longer processing times, and restrictions on different technical sizes. Most of the work requires either very large areas or they provide only very limited details. Above all, having only one source of light has its problems because light travels so fast.
"There is nothing faster than the speed of light, so if you want to measure the travel time of light more accurately, you need ultra-high speed detector detectors, which are very expensive," says Volumetters. They are very expensive. "
But the use of two different wavelengths instead of one allows the prototype to work without ultra-bright light sources and detectors but also results in a faster, higher resolution image.
Although there is still a long way to go before this technology can be introduced into everyday life, volumeters are confident that "it must come."