Infineon teams for smart glasses and head-up displays

August 09, 2021 // By Nick Flaherty
Infineon teams for smart glasses and head-up displays
Infineon Technologies has teamed with Vienna startup TriLite Technologies on a reference design for smart glasses using a new MEMS mirror and driver chip

Infineon has developed a laser scanner for smart glasses and automotive head-up displays (HUD) that combines a MEMS mirror and driver. Companies and componnt suppliers are positioning for smart glasses to be the next generation of display devices for mobile phones. For Infieon, the scanner can also be using to add augmented reality displays to automotive systems, boosting production volumes and driving down costs.

TriLite is handling the system integration and control algorithms that enhance the optical performance of the system. Both companies combine several years of research in optical MEMS and mass manufacturing capabilities.

The latest version has a volume of 1.6 cm³ and weighs 3.1 g with a field of view (H x V) of 40° x 20° for the 960 x 480 display. Three laser sources are combines with 10bit colour depth on the one 2D mirror with 90MHz raster scanning.

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Infineon says the low power consumption of the MEMS scanner chipset means small batteries can easily be integrated into the frame, allowing the glasses to be worn conveniently throughout the day without the need to frequently recharge the batteries.

“Augmented reality solutions enrich real environments with valuable digital data and help people to move around more conveniently and safely in daily life, for business and leisure activities, but especially on the street,” said Charles Chan, head of Infineon’s automotive MEMS product line. “Maps, infotainment or messages projected on everyday glasses guide people to the nearest supermarket or shared car park around the corner. Overlaying valuable information, from route navigation to driver assistance systems, over the car’s complete windshield, instead of just over a small area in front of the driver, is a major step ahead for improving driving safety and convenience.”

TriLite’s patented laser pulse timing algorithms enable the perfect overlapping of RGB color channels, eliminating image distortions – all without requiring any additional optical elements. Shifting complexity from hardware to software is just one more way Trixel® achieves such a small form factor. And why it provides the best image quality for high performance AR applications utilizing a wide field of view on the market.

The TriLite tool chain includes pixel-painting algorithms to allow full system simulation from video-in to photon-out, optimizing design performance and iteration speed. Proprietary multiparameter algorithms for the laser and mirror control minimize the complexity and size of the optical system

A software-driven hardware architecture allows higher alignment tolerances which helps increase yield and reduce manufacturing costs.

www.trilite-tech.com; www.infienon.com

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