Scientists Develop Contact Lenses that Offer Enhanced Vision

Chinese researchers have created a contact lens designed to give humans a form of “super vision”—the ability to perceive infrared light, which is normally invisible to the naked eye.

The breakthrough relies on upconversion nanoparticles, which absorb infrared light and convert it into visible light, effectively extending human vision beyond its natural 400–700 nanometer range.

Volunteers Detect Infrared Signals Using Smart Lens

In tests, volunteers wearing the lens could detect Morse code signals from an infrared LED and determine the light’s direction—tasks impossible without the technology.

The lens could also prove useful in daily life, with future applications aimed at assisting people with color blindness and other vision impairments. Researchers estimate its price at around US$200 (approximately R$1,100).

Compact, Battery-Free Lenses Surpass Traditional Night Vision Goggles

Unlike night vision goggles—which detect infrared radiation but are bulky, require power, and display only the familiar green-tinted images—the lenses are lightweight, battery-free, and produce full-color images.

Although still in the testing stage, the technology opens the door to a new way of seeing the world, more akin to certain animals—like birds, bees, and reindeer—that can naturally perceive invisible light bands such as ultraviolet.

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Read the original article on: G1 Globo

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