From TechXplore: "Prototype glasses can turn infrared into color vision." Chinese researches claim to have produced a light weight (23-gram or 0.8-ounce) pair of glasses that allow a person to see into the infrared spectrum.
The prototype device uses microscopic particles called mercury telluride colloidal quantum dots. When infrared light strikes them, they absorb it and convert it into electrical charges.
These charges flow into an organic light-emitting diode (OLED), a type of light-emitting display that contains a red and a cyan color zone. Low-energy, or weaker, infrared signals carry enough charge to light up the red zone, while higher-energy infrared signals generate enough charge to activate both zones.
"We redefine infrared vision by transcending the monochrome paradigm, translating infrared spectral and intensity signatures into discernible color variations rather than mere brightness changes," wrote the study authors in their paper.
Prototype glasses
The scientists built a lightweight, 23-gram (0.8-ounce) prototype pair of glasses and tested it by shining infrared light through different shapes and moving objects. The results showed that the device projected sharp, color-coded images of these objects while still letting normal light pass through. This means a user can see the regular world and the infrared world at the same time. The team also measured electrical responses in human eyes, showing that the converted light triggered normal responses in the retina.
Although the technology is still at the prototype stage, the researchers believe their innovation could have applications far beyond infrared vision.
"By surpassing the evolutionary boundaries of biological photoreception, this technology paves the way for next-generation visual prosthetics and human-integrated sensory expansion."
More: "Infrared glasses could push the boundaries of human eyesight"--Popular Science.