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Infrared filter allows everyday eyeglasses to double as night vision lenses
Night vision technologies have a wide range of applications, from sports to military and medical operations. However, they are limited by bulky light-processing and cryogenic cooling components,...
However, they are limited by bulky light-processing and cryogenic cooling components, as well as their reliance on narrow bandgap semiconductors, such as InGaAs, which require low-temperature operation and have high noise levels. Researchers in Australia have now discovered that using metasurface-based up-conversion technology – an ultra-thin material that can capture infrared and visible light at the same time – everyday eyewear can be augmented with night vision. The researchers, from TMOS, the ARC Centre of Excellence for Transformative Meta-Optical Systems, created an infrared filter that is thinner than a piece of cling wrap, weighs less than a gram, and could one day be placed on an ordinary pair of glasses.
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