Distance & proximity sensors

From millimeters to meters, ams OSRAM offers a portfolio of precise direct time-of-flight distance and low power, compact optical proximity sensors.

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Distance & proximity sensors

ams OSRAM direct Time-of-Flight (dToF) sensors offer fast, precise distance measurement up to 5 meters, in a compact fully integrated module. Available in both single and multi-zone configurations, these devices provide solutions for a wide range of distance measurement applications including Laser Detect Auto Focus (LDAF) for mobile, human presence detection for enhanced security and power saving in computing, electronic locks & authentication systems and obstacle detection and collision avoidance for home and industrial robots. Proximity sensors are used to detect user interaction with an end product such as a mobile phone, wireless earbud, or as a switch replacement. For example, these tiny sensors can be integrated into wireless earbuds to detect when a user removes them from the ear to pause playback and extend battery life. We also provide a portfolio of ambient light sensors with integrated proximity sensors for mobile applications.
 

Distance and Proximity Sensors direct time of flight distance and low power optical proximity sensors
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Distance sensors

Time-of-Flight (ToF) sensors from ams OSRAM are based on proprietary SPAD (Single Photon Avalanche Photodiode) pixel design and time-to-digital converters (TDCs) which have an extremely narrow pulse width. They measure in real time the direct time-of-flight (dToF) of a 940nm VCSEL Vertical Cavity Surface Emitting Laser) emitter’s infrared ray reflected from an object. This low-power dToF sensing technology enables host systems to accurately measure distance at very high speed. Accurate distance measurements are used in many applications e.g. presence detection, obstacle detection / collision avoidance & ranging.




 

Distance and Proximity Sensors direct time of flight distance and low power optical proximity sensors
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Proximity sensors

ams OSRAM proximity sensors function by pulsing an IR emitter, which can be either an Infrared Light Emitting Diode (IR-LED) or a Vertical Cavity Surface Emitting Laser (VCSEL), and measuring the reflected energy returned from a target. The amount of reflected energy is inversely proportional to the target distance and proportional to the target size and reflectance. The trend toward narrow bezel and no bezel smart phone designs presents new challenges beyond those that occur with traditional proximity system designs that use IR ink apertures on a wide bezel. Technology developed by ams OSRAM will enable accurate ambient light, color and proximity sensing solutions to operate behind OLED displays.

 

Distance and Proximity Sensors direct time of flight distance and low power optical proximity sensors
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