Via the Rochester Business Journal
Big tech firms increasingly agree that smart glasses will be the go-to device for consumers to interact with AI. Yet, putting these devices on millions of users relies on fixing a massive engineering riddle: How do you turn a transparent glass lens into a digital display screen without ruining its clarity?
Right now, trying to force eyewear to pull double duty introduces three major visual flaws: the screen sickness users feel when trying to focus; an awkward “eye-glow” that leaks the screen’s image to onlookers, posing security risks; and lenses that look dim instead of perfectly clear. Current market alternatives rely entirely on older diffractive or reflective optics. These traditional methods force developers to accept severe hardware constraints, sacrificing battery life and brightness while creating manufacturing bottlenecks that prevent mass production.
A new branch of display physics
Fortunately, an emerging deep-tech spin-out from the University of Southampton has developed an industry-first innovation with the capability to turn everyday lenses into bright, fully transparent digital windows.
Led by University of Oxford graduate Dr. Peter GR Smith, Smith Displays‘ patented wavemixing technology introduces an entirely new branch of display physics specifically for augmented reality (AR) developers. Instead of bouncing images across the surface of the glass, wavemixing changes how light behaves inside the eyepiece. By replacing the need to use complex, bulky optics to deliver display capabilities, both the engineering riddle—and the three eyewear flaws—can be solved. This enables AR developers to design displays inside smart glasses that look just like regular spectacles, with fully transparent lenses, daylight brightness, zero eye-glow, and day-long battery life.
To prove that this display technology could fit into lightweight, fashionable eyewear, Smith Displays recently collaborated with Sony and its spin-out, Scale Photonics, on the miniaturization of laser architectures, validating that its system meets strict consumer requirements.
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