Augmented Reality in a Contact Lens

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“A new generation of contact lenses built with very small circuits and LEDs promises bionic eyesight” link

This article made the transhumanist in me squee. A few quotes;

“These lenses don?t give us the vision of an eagle or the benefit of running subtitles on our surroundings yet. But we have built a lens with one LED, which we?ve powered wirelessly with RF. What we?ve done so far barely hints at what will soon be possible with this technology.

“We?ve built several simple sensors that can detect the concentration of a molecule, such as glucose. Sensors built onto lenses would let diabetic wearers keep tabs on blood-sugar levels without needing to prick a finger. …

“We?ve fabricated prototype lenses with an LED, a small radio chip, and an antenna, and we?ve transmitted energy to the lens wirelessly, lighting the LED. …

“The LEDs by themselves merely produce a fuzzy splotch of color in the wearer?s field of vision. Somehow the image must be pushed away from the cornea. One way to do that is to employ an array of even smaller lenses placed on the surface of the contact lens. …

“Normal contact lenses that correct for astigmatism are weighted on the bottom to maintain a specific orientation, give or take a few degrees. I figure the same technique could keep a display from tilting (unless the wearer blinked too often!). …

“The true promise of this research is not just the actual system we end up making, whether it?s a display, a biosensor, or both. We already see a future in which the humble contact lens becomes a real platform, like the iPhone is today, with lots of developers contributing their ideas and inventions. As far as we?re concerned, the possibilities extend as far as the eye can see, and beyond.”

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