Scientists at China’s University of Science and Technology have created infrared contact lenses that allow wearers to see in the dark. The lenses use nanoparticles to absorb infrared light and convert it into visible wavelengths, a process previously thought only possible with night vision goggles. Unlike traditional goggles, these lenses do not require power sources and work even when eyes are closed.
The researchers combined nanoparticles with flexible polymers used in standard contact lenses. They tested their function on humans and mice, finding that participants wearing the lenses could detect flashing signals and perceive infrared light direction. In tests, people without the lenses showed no preference.
To take this technology further, the team plans to alter the nanoparticles to convert different wavelengths into colors, allowing color-blind individuals to see colors again. Currently, the lenses only work with LED light sources, but the researchers aim to increase sensitivity to lower levels of infrared radiation.
This breakthrough has potential applications in security, rescue, and encryption settings, among others. As senior author Tian Xue explains, “Our research opens up the potential for non-invasive wearable devices to give people super-vision.”
Source: https://www.independent.co.uk/news/science/new-contact-lenses-night-vision-dark-infrared-b2756338.html