A group of scientists from the Institute of Science and Technology in Barcelona, Spain, has created a transparent material suitable for smart lenses and AR glasses.
In a study published on the arXiv preprint server, a new material is described that aims to solve the problem of tracking the user’s gaze in wearable augmented reality devices.
Engineers proposed using a highly transparent material to gather information without causing any disturbance to the eye. They developed a photodetector by adding small lead sulfide dots onto graphene sheets. When a photon hits the dots, electron emission occurs, which, in turn, generates a current after passing through the graphene layer. The materials are so small that they are invisible to the human eye and capable of transmitting up to 95% of light.
Tests have shown that the sensor’s refresh rate is 400 GHz, which is twice as much as needed for obtaining a quality image.
The authors of the study believe that this material can be used in the development of smart lenses and augmented reality glasses.
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