Infrared light angle sensor can detect user hand movements for gesture recognition

The ADPD2140 Infrared Light Angle Sensor, from Analog Devices, is an optical sensor that measures the angle of incident infrared light. Light angles calculated from the sensor response are linear to ±5-degrees within an angular field of view of ±35-degrees. The device has a radiant sensitive area of 0.31mm². The low junction capacitance and low dark current of the device enables optimal integration with the ADPD1080 photometric front end. The sensor can be used with a synchronous infrared light source such as an LED to identify user hand movements for gesture recognition. Typical applications include gesture for user interface control in portable devices, object location tracking, industrial/automation monitoring, angle sensing, proximity sensing, and object distance measurement (triangulation).