3D Ranging and Sensing

LiDAR is a ranging technique that is increasingly being employed in applications such as mobile range finding, automotive ADAS (Advanced Driver Assistance Systems), gesture recognition and 3D mapping. Employing an SiPM as the photosensor has a number of advantages over alternative sensor technologies such as APD, PIN diode and PMT particularly for mobile and high volume products.

SensL SiPM’s have proven robust in other high volume markets such as medical imaging and now LiDAR applications can benefit from sensors designed to be industrial grade and delivered at the lowest cost possible.

A recent article on i-micronews discusses SensL sensors for LiDAR applications.

More information on SiPM sensors for Automotive ADAS can be found here.

SensL LiDAR Demonstrator

SensL Interviewed at AutoSens 2016

Solid State LiDAR in the Real World

SiPM Benefits for Ranging

  • Single Photon detection at 905nm
  • Responsivity of 530kA/W at 905nm
  • Low power – lower operating voltages and simple readout electronics allow a low power design
  • High bandwidth and fast response time – minimize
    range measurement time
  • Low noise and high gain – good signal to noise ratio (SNR) is achievable
  • High dynamic range
  • Standard CMOS fabrication process – low cost, highly uniform and scalable production
  • Small size SMT packaging – 1mm sensors available
  • Ability to take advantage of low laser power direct ToF ranging techniques

Ranging Applications for SiPM Sensors


Mobile Proximity Sensing and Autofocus

3D Mapping

Gesture Recognition

Augmented Reality


“SiPM Sensors for ToF Ranging Applications” (Poster)

Poster from the SPIE Photonics West 2016 conference, giving an overview of SensL’s work on using SiPM sensors for ranging applications.

“Direct Time-of-Flight Ranging with SensL SiPM” (App. Note)

An application note that gives a brief overview of SensL’s work using SiPM sensors for direct ToF ranging applications, at both short and long distances.

“SiPMs in Direct ToF Ranging Applications” (White Paper)

A white paper that gives a detailed description of how SensL SiPMs can be employed for direct ToF ranging, including a description of a MATLAB model developed by SensL for simulating various sensor and environmental configurations. It is used to isolate the contribution of each individual factor on the system signal to noise ratio.

Ranging Demonstrator Description” (Tech Note)

A detailed description of the Ranging Demonstrator hardware built by SensL to demonstrate the ranging performance of the SiPM sensors.