Technology has achieved reality to get closer and more to fiction in recent years. An invention has revolutionized science: some lenses convert infrared light into visible light.
This historical milestone is possible thanks to contact lenses in the style of infrared night vision glasses, but take this technology to the next level. This system described in the magazine Cell You do not need a power supply. Besides, Users can perceive multiple infrared wavelengths.
Lentillas with nanoparticles that absorb infrared light
Contact lenses use nanoparticles that They absorb infrared light to turn them into visible wavelengths for mammals’ eyes. Humans could perceive electromagnetic radiation in the range of 400 to 700 nm, an unprecedented advance in science.
Nanoparticles detect what is known as «near infrared light», a rank radiation of 800 to 1,600 nm. Humans can not only perceive waves that were previously invisible, the slows also behave like conventional lenses.
The manufacturing process has not been simple. The first prototype was tested in mice by injecting infrared vision nanoparticles in animals, turned out to be a technique too invasive for humans.
The team of researchers behind this invention has copied the structure of soft contact lenses with flexible and non -toxic polymers. The mice responded better to the tests with this system.
The researchers showed two boxes, one dark and one with infrared lighting. The mice used by these intelligent lenses chose the dark box, while the animals without lenses showed no preference.
The mice showed clear signs of infrared vision. Animal pupils contracted in the presence of infrared light, scientists found that brain images showed that These invisible waves for the human eye activated their visual processing centers.
The lenses have been tested in humans
The contact lenses that allow to see in the dark have overcome the tests in mice, so researchers have gone to the proof of truth in humans. These lenses have allowed participants in the experiment See with precision flashing signs in the style of the Morse code and detect the direction of infrared light.
In addition, infrared lenses can differentiate between infrared light spectra to code the different wavelengths by colors. For example, the lengths of 808 Nm were green and those of 1532 nm are red thanks to the nanoparticles.
The creators of the invention have gone further allowing the Daltonic people to customize the tone to visualize the infrared signals correctly.
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Tags: studies, health