A few days after Facebook’s announcement of the smart glasses Ray-Ban Stories, Xiaomi presented its smart glasses through its blog: they are called Xiaomi Smart Glasses. Weighing 51 grams, they are able to view messages and notifications, make calls, navigate, take photos and translate text right in front of the wearer’s eyes.
Unlike the Ray-Ban Stories glasses that do not have a display where to view information but more than anything else offer only two cameras to capture videos and photos of moments from the wearer’s point of view, these Xiaomi Smart Glasses have a display composed of MicroLED. Xiaomi said he chose this technology because, like OLEDs, MicroLED pixels are individually illuminated – a property that allows you to obtain brighter images with deeper blacks – but boast a higher pixel density and a longer lifespan even though having a simpler structure.
The display found in Xiaomi’s smart glasses measures 2.4×2.02mm – under the microscope it is about the size of a grain of rice – with individual pixels of 4um. To allow sufficient light to pass through optical structures before reaching the eye even in direct sunlight, Xiaomi has opted for an ultra-efficient monochrome display solution, capable of achieving a peak brightness of 2 million nits. .
By adopting the optical waveguide technology (optical waveguide technology) which refracts lights at 180 °, the MicroLED display accurately transmits light rays to the human eye through the microscopic lattice structure of the optical waveguide lens. The lattice structure engraved on the inner surface of the lens allows light to be refracted in a unique way, directing it safely into the human eye. The refraction process involves the bouncing of light rays countless times, allowing the human eye to see a complete image and increasing the usability of the glasses when worn. All of this is done within a single lens, instead of using complicated multiple lens systems, mirrors or half mirrors like other products do. Optical waveguide technology significantly reduces the size and weight of the device and thus allows smart glasses to approach the form factor of traditional glasses.
The glasses are composed of a total of 497 components including small sensors and communication modules including quad-core processor, battery, touch pad, Wi-Fi / Bluetooth modules, Android OS and more. For this reason, Xiaomi has defined these Smart Glasses not “a secondary display for smartphones” but a “real independent wearable device”. In addition to showing the most important notifications and the number of incoming calls, you can use the dual beamforming microphone and speaker built into the glasses to answer phone calls while the 5MP camera on the front of the glasses can take pictures and translate the text in photo. It is also possible to view on the display in augmented reality the directions to reach a destination while navigating by bike or on foot.
To respect the privacy of others, there is a light indicator next to the camera that lights up when the camera is in use.