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Augmented Reality Contact Lenses

Augmented reality technology seems to be advancing in leaps and bounds. In an exciting move for us science fiction lovers, a company called Mojo Vision has recently demonstrated their latest version of an augmented reality contact lens.

The lens includes a 0.5mm wide, 2,800-pixel LED display that sits almost imperceptibly in the centre of the wearer’s vision. The microelectronics include an ARM Cortex M0 processor, a 5GHz radio transducer for communicating with a smart device, and an accelerometer, gyroscope, and magnetometer that track eye movement and enable the user to control the display.

Miniaturisation of this kind, and to this extent, is especially difficult from the point of view of power management. How do you provide sufficient power to the electronics? Obviously, it can’t be wired in to an external battery.

Mojo have addressed this technical problem by having the lens display focus its light directly onto the wearer’s fovea centralis, a particularly sensitive area of the retina. This directed focussing provides a clear image for surprisingly little power consumption. This is one of many technical challenges the team at Mojo has overcome to get to this stage, and I for one can’t wait to see what they produce next.