Infrared-based dynamic sensor detects gestures at greater distances

05-07-2021 | Maxim | Test & Measurement

Maxim Integrated Products has launched the next generation of its infrared-based dynamic optical sensor, able to sense a wider range of gestures at extended distances. The MAX25405 detects a wider proximity of movement. It doubles the sensing range to 40cm in comparison to earlier generations, all in a quarter of the size and at ten times lower cost than ToF camera-based systems in automotive, industrial and consumer applications. These enhancements provide an alternative to voice communications, allowing drivers to focus on the road.

Together with integrated optics and a 6 x 10 infrared sensor array, the next-generation device now incorporates a glass lens which improves sensitivity and increases the SNR. The improved performance doubles the proximity and distance of sensing applications to beyond the driver, providing gesture-sensing entertainment displays to the co-driver and rear-seat passengers, for example. The device features a high level of integration compared to competitive ToF solutions that need three chips and a complex microprocessor. The device's small 20-pin, 4mm x 4mm x 1.35mm QFN package together with four discrete LEDs measures up to 75% smaller than ToF camera-based solutions.

"Maxim Integrated's MAX25405 recognises the most dynamic gestures at the lowest cost, allowing automakers to avoid the prohibitive cost of time-of-flight cameras and to help keep drivers' eyes on the road," said Szu-Kang Hsien, director for the Automotive Business Unit at Maxim Integrated. "The affordable gesture sensing feature adds value to low- and mid-range cars while offering passengers the luxury of touch-free gesture control."

By Natasha Shek