AI translation in smart glasses drives microLED display

September 16, 2021 // By Nick Flaherty
AI translation in smart glasses drives microLED display
Smart glasses from Xaomi can translate text from pictures taken by a 5Mpxel camera and from an audio stream and display the text in real time on a microLEd screen  

Xiaomi has developed a monochrome microLED screen for smart glasses to display real time translation of text and audio. An AI engine can translate text from pictures taken by a 5Mpxel camera and display them in real time on the glasses.  

The design has 497 components and weighs 51g. The monochrome display chip in the Xaomi smart glasses (above) measures 2.4mm x 2.02mm with 4μm individual pixels to fit within the frame of the glasses. To allow sufficient light to pass through complicated optical structures before reaching the eye even in harsh direct sunlight, the developers used a monochrome display with a peak brightness of 2 million nits.

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By adopting optical waveguide technology which refracts lights at 180°, the MicroLED display accurately transmits light beams to the human eye through the microscopic grating structure of the optical waveguide lens.

The grating structure etched onto the inner surface of the lens allows light to be refracted into the eye with multiple beams, allowing the eye to build up a complete image. This is performed in a single lens, instead of using complicated multiples lens systems, mirrors, or half mirrors. This reduces the device size and weight.

As well as the display chip, the 497 components include sensors, touchpad and communication modules and an XiaoAi AI Assistant as the primary interaction method.

The 5MP camera on the front of the glasses can also take photos and translate text in photos, which is highly convenient when traveling. Using the dual beamforming microphone with a proprietary translating algorithm, Xiaomi Smart Glasses can also transcribe audio into text with translations in real time. Like the Facebook Ray-bans, The indicator light next to the camera will illuminate when the camera is in-use to indicate that photos are being taken.

The XiaoAI agent also selects and pushes the most important messages, such as smart home alarms, urgent information from office apps, and messages from important contacts.

The glasses use a quad-core ARM processor, battery, touch pad, Wi-Fi/Bluetooth modules and Android operating system. Xaomi s reported to have at least 34 investments in semiconductor companies in China over the last two years to sewcure its supply chain in both design and manufacturing.

www.mi.com

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