IR-based dynamic gesture sensor doubles range

June 30, 2021 // By Jean-Pierre Joosting
IR-based dynamic gesture sensor doubles range
Next-generation optical sensor recognizes a variety of gestures in a quarter of the size and at 10x lower cost than camera-based time-of-flight systems in next-generation automotive, industrial and consumer applications.

Maxim Integrated Products has introduced the next generation of its infrared-based dynamic optical sensor, able to sense a broader range of gestures at extended distances. The MAX25405 detects a wider proximity of movement and doubles the sensing range to 40 cm when compared to earlier generations, all in a quarter of the size and at 10x lower cost than time-of-flight (ToF) camera-based systems in automotive, industrial and consumer applications. These enhancements offer an alternative to voice communications, enabling drivers to focus on the road.

Along with integrated optics and a 6 x 10 infrared sensor array, the MAX25405 now includes a glass lens which increases sensitivity and improves the signal-to-noise ratio. The improved performance doubles the proximity and distance of sensing applications to beyond the driver, offering gesture-sensing entertainment displays to the co-driver and rear seat passengers, for example. The MAX25405 features a high level of integration compared to competitive ToF solutions that require three chips and a complicated microprocessor. The MAX25405's small 20-pin, 4- x 4- x 1.35-mm quad flat no-lead (QFN) package together with four discrete LEDs measures up to 75 percent smaller than ToF camera-based systems.

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The MAX25405 detects a wider proximity of movement and doubles the sensing range to 40cm when compared to earlier generations, all in a quarter of the size and at 10x lower cost than ToF camera-based systems.

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