AR Smart Glasses, Next Frontier Of FaceBook

Facebook is hard at work on the technical breakthroughs needed to ship futuristic smart glasses that can let you see virtual objects in the real world. A patent application for a “waveguide display with two-dimensional scanner” was published on Thursday by three members from the advanced research division of Facebook’s virtual-reality subsidiary, Oculus.

The smart glasses being developed by Oculus will use a waveguide display to project light onto the wearer’s eyes instead of a more traditional display. The smart glasses would be able to display images, video, and work with connected speakers or headphones to play audio when worn.The display “may augment views of a physical, real-world environment with computer-generated elements” and “may be included in an eye-wear comprising a frame and a display assembly that presents media to a user’s eyes,” according to the filing.

By using waveguide technology, Facebook is taking a similar approach to Microsoft‘s HoloLens AR headset and the mysterious glasses being developed by the Google-backed startup Magic Leap.

One of the authors of the patent is, in fact, lead Oculus optical scientist Pasi Saarikko, who joined Facebook in 2015 after leading the optical design of the HoloLens at Microsoft.

While work is clearly being done on the underlying technology for Facebook‘s smart glasses now, don’t expect to see the device anytime soon. Michael Abrash, the chief scientist of Oculus, recently said that AR glasses won’t start replacing smartphones until as early as 2022.

Facebook CEO Mark Zuckerberg has called virtual and augmented reality the next major computing platform capable of replacing smartphones and traditional PCs. Facebook purchased Oculus for $2 billion in 2014 and plans to spend billions more on developing the technology.

Source: http://pdfaiw.uspto.gov/
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How To Erase Chips Remotely

A military drone flying on a reconnaissance mission is captured behind enemy lines, setting into motion a team of engineers who need to remotely delete sensitive information carried on the drone’s chips. Because the chips are optical and not electronic, the engineers can now simply flash a beam of UV light onto the chip to instantly erase all content. Disaster averted.

This James Bond-esque chip is closer to reality because of a new development in a nanomaterial developed by Yuebing Zheng, a professor of mechanical engineering and materials science and engineering in the Cockrell School of Engineering. His team described its findings in the journal Nano Letters.

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The molecules in this material are very sensitive to light, so we can use a UV light or specific light wavelengths to erase or create optical components,” Zheng said. “Potentially, we could incorporate this LED into the chip and erase its contents wirelessly. We could even time it to disappear after a certain period of time.”

To test their innovation, the researchers used a green laser to develop a waveguide — a structure or tunnel that guides light waves from one point to another — on their nanomaterial. They then erased the waveguide with a UV light, and re-wrote it on the same material using the green laser. The researchers believe they are the first to rewrite a waveguide, which is a crucial photonic component and a building block for integrated circuits, using an all-optical technique.

Source: https://www.eurekalert.org/