MultiSense SLB

The MultiSense SLB is the second generation of our tri-modal (laser, 3D stereo, and video), high-resolution, high-data-rate, and high-accuracy 3D range sensor.  The sensor is suitable for use in a wide variety of robotics, automation, and sensing applications, such as autonomous vehicles, 3D mapping, and workspace understanding.  The MultiSense SLB is packaged in a rugged, compact housing, along with a low-power FPGA processor, and is pre-calibrated at the factory.

The original MultiSense SL is the sensor of choice for the Atlas humanoid robots in the DARPA Robotics Challenge (DRC). As the “head” of the humanoid, the SL provides the majority of perceptual data used for teleoperation as well as automated control. In the 2013 trials, 5 of the 8 top scoring teams used the Carnegie Robotics SL sensor head.

The MultiSense SLB produces 3D point clouds from both the spinning laser and the stereo camera which are accurately aligned and colorized onboard the sensor.  The stereo sensor provides extremely dense “full frame” range data at high frame-rates, which is complemented by high accuracy data, at lower rates, from the spinning laser.  The sensor can also output standard color video.

The MultiSense SL combines a Hokuyo UTM-30LX-EW laser and a Carnegie Robotics updated MultiSense S7 high resolution stereo camera into a fused GigE device. The Hokuyo—which outputs 43,000 points per second—is axially rotated on a spindle at a user-specified speed. The stereo camera has a 7 centimeter baseline and can be configured with either a 2 or 4 megapixel sensor, making it the highest resolution commercial stereo camera available to date. On-board processing handles image rectification, stereo data processing, time synchronizing of laser data with a spindle encoder, spindle motor control, lighting timing, and managing the GigE interface. The GigE output includes time-synced laser and stereo data in a ready-to-use format. The advantages of this architecture are that a powerful external computer is not needed for stereo processing, and that the user does not need to provide stereo processing algorithms or stereo/laser calibration. Each MultiSense sensor ships fully calibrated from the factory.

The stereo portion of the MultiSense SLB can find over 11 million feature matches every second. A precise calibration process, performed at Carnegie Robotics, creates the necessary information to transform the pixel-level information into an accurate range measurement, while also compensating for lens distortion, small variations in lens alignment, and other manufacturing tolerances. If desired, the stereo point cloud can be augmented by overlaying color image data onto the point cloud—resulting in compelling, very low latency, life-like 3D data sets.

Our easy to use ROS-based API and tools allow you to view live image and 3D range data; adjust laser, camera, and stereo parameters; log data; playback logs; check the unit's calibration; and change the sensor's IP address.  An open-source C++ library and Gigabit Ethernet interface make it easy to integrate live data into your robot, vehicle, mobile equipment, lab environment, or other application.

Carnegie Robotics has also thermally tested MultiSense units at both high and low extremes as part of our design validation process. Here an engineering sample unit is undergoing a operational test at 50C (122F) ambient.

Carnegie Robotics has also thermally tested MultiSense units at both high and low extremes as part of our design validation process. Here an engineering sample unit is undergoing a operational test at 50C (122F) ambient.

Available Options

  • CMV4000, 4 megapixel imager, 80° x 80° FOV with standard lens
  • Greyscale or color imager (with or without IR cut filter)
  • Lenses with narrower and wider FOV
  • Protective grill for laser
  • IR pattern projector
  • IR lighting
  • Visible lighting

Software Toolkits

  • C++ Library, BSD License
  • ROS Node, BSD Lisense
  • Configuration utilities (part of the C++ library)

The MultiSense SL sensor serves as the the perceptual "head" for the six Atlas robots in the DARPA Robotics Challenge. Five of these robots went on to place in the top 8 finishers in the 2013 trials.

Physical Details

Height19.1 cm
Width12.7 cm
Depth13.0 cm
Weight2.6 kg
Operating Temp-10°C to 50°C
Input Voltage24V DC nominal
18V to 48V max
Power Draw20W nominal
75W @ peak RPM /full lighting
InterfacesGigabit Ethernet
Opto-Isolated Input
Opto-Isolated Output

Stereo Details

Range0.4m to 10m
Std LensFOV80° x 45°
Focal Length6.5mm
Mono or Color Bayer
2MP7.5 FPS, 128 disparities
1MP15 FPS, 128 disparities
0.5MP30 FPS, 128 disparities
Mono or Color Bayer
4MP4 FPS, 128 disparities
2MP7.5 FPS, 128 disparities
1MP15 FPS, 128 disparities
Depth Resolution@ 1m+/- 0.3 mm
@ 10m+/- 30 mm

Laser Details

ModelHokuyo UTM-30LX-EW
Laser905nm class 1 laser
Scan rate40 Hz
Field of view270 degrees
Angular resolution0.25 degrees (1081 samples per scan)
Detection range0.1m - 30m
Accuracy+/-30mm (0.1m-10m)
+/-50mm (10m-30m)
Multi-EchoUp to 3 returns per sample
IP ratingIP67

Please contact Carnegie Robotics ( for pricing and delivery or for pricing on custom fields-of-view or other design changes or technical inquires. 


DescriptionSizeUpdate Date
MultiSense Stereo Brochure2.7 MB2019-03-14
Interface Document387.9 KB2018-01-05
Simplified CAD (STEP)

6.0 MB2018-01-05
Simplified CAD (X_T)

3.3 MB2018-01-05
Optional Face Mask CAD (STEP)

215.7 KB2018-01-05

Available Accessories

NamePart NumberDescription
Developer Kit830-00675AC power supply, power & data breakout cabling
Case730-00004Reusable padded shipping and storage case

Please contact to place orders, for formal quotations, or for pricing on custom fields-of-view or other design changes.
All sales are subject to Carnegie Robotics' standard terms and conditions.