These contact lenses let humans see invisible infrared light
Briefly

Chinese researchers have engineered innovative contact lenses embedded with nanoparticles that transform infrared wavelengths into visible light. This breakthrough allows wearers to detect infrared LEDs and covert communications, even with their eyes closed. Although the lenses do not amplify signals like night-vision goggles, they can perceive brighter infrared sources. The invention paves the way for practical uses, such as security and surveillance, offering a unique method to visualize invisible information that could not previously be seen without specialized equipment.
These newly developed contact lenses utilize nanoparticles to convert infrared wavelengths into visible light, enabling wearers to perceive infrared light sources with their naked eye.
The lenses do not amplify incoming signals, which limits their effectiveness to only brighter infrared sources, distinguishing their functionality from traditional night-vision devices.
A remarkable feature of the lenses is their ability to allow users to see infrared light even when their eyes are closed, providing a novel approach to enhancing vision.
This technological advancement opens possibilities for applications in various fields, including surveillance and security, where invisible messages and signals could be more readily observed.
Read at Nature
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