LiDAR (/ˈlaɪdɑːr/, also LIDAR, or LiDAR; sometimes LADAR) is a method for determining ranges (variable distance) by targeting an object with a laser and measuring the time for the reflected light to return to the receiver. Lidar can also be used to make digital 3-D representations of areas on the earth’s surface and ocean bottom, due to differences in laser return times, and by varying laser wavelengths. It has terrestrial, airborne, and mobile applications.

Lidar is an acronym of “light detection and ranging” or “laser imaging, detection, and ranging”. Lidar sometimes is called 3-D laser scanning, a special combination of  3-D scanning and laser scanning.

LiDAR is a remote sensing technology. LiDAR technology uses the pulse from a laser to collect measurements. These are used to create 3D models and maps of objects and environments.

Types of LiDAR

Mechanical LiDAR (scanning LiDAR uses mechanical rotation to spin the sensor for 360-degree detection)

Solid-State LiDAR

-Micro-electromechanical system (MEMS) technology in which a MEMS-based mirror moves to “scan” the environmentBlickfeld.

-Optical phased array (OPA) that deliver light pause to a different direction by adjusting the array and does not require sensor movement

-Flash Lidar technology works like a camera, delivering a flashlight to detect the whole surrounding area at once and analyzing the information with an image sensor – LeddarTech.

Using a unique combination of two custom chips: one vertical-cavity surface-emitting laser (VCSEL) chip for firing the lasers, and one photon avalanche diode (SPAD) chip for detecting the lasers when they bounce back. Put these two chips together, and you get a “multi-beam flash lidar – Ouster

Brand Pros Cons Type
Blickfeld No Moving parts Low Cost and smaller than Scanning LiDAR, Shorter Distance Solid-State LiDAR,
LeddarTech No moving parts Low cost and smaller than Scanning LiDAR,(optional) Distance and FOV smaller than scanning LiDAR Solid-State LiDAR
Ouster No Moving parts, Hi-Resolution 2D,3D,Low cost and smaller than Scanning LiDAR, Heat distribution issue for OS0 and OS1 due to the compact design Now speed Navigation
OLEI Small, Compact and low cost Low speed Navigation Scanning LiDAR

Ouster

Leddar tech

Brand LeddarTech Ouster Blickfeld OLEI
Types Flash Solid State Solid State LiDAR Solid-State LiDAR, Scanning LiDAR
Models 1D/2D/3D Pixell/T16/D-Tec/M16/IS16/VU8/LeddarOne 3D OS0,OS1,OS2 32/64/128 Channels 3D CUBE1, CUBE Range 1 2D/3D LR-1BS,LR-1B,LR-1F
Laser Wavelength (nm) Varies 850,905,940nm Pixell 905nm 850nm 905nm 905nm
FOV (º) Pixell
Horizontal: 177.5 ± 2.5
Vertical: 16.0 ± 0.5
OS0-Hort=360, Vert=90
OS1-Hort=360, Vert=45
OS2-Hort=360, Vert=22.5
CUBE1 – Hort=70, Vert=30
CUBE Range 1 – Hort=18, Vert=12
LR-1BS – 270
LR-1B – 270
LR-1F – 360
Distance (m) Up to 185m
Pixell 32-56m
OS0-50m
OS1-120m
OS2-240m
CUBE1 – 75m
CUBE Range 1 – 150m
LR-1BS – 35m
LR-1B – 35m
LR-1F – 60m
Weight (Kg) Depend on models
Pixell 2.1kg
OS0-455g
OS1-455g
OS2-930g
CUBE1 – 275g
CUBE Range 1 – 385g
LR-1BS – 320g
LR-1B – 735m
LR-1F – 750g
Accuracy (cm) +/-5cm
Pixell +/-3cm
OS0-+/-5cm
OS1-+/-5cm
OS2-+/-5cm
CUBE1 – 1cm
CUBE Range 1 – 1cm
Operating ambient Temperature (Celsius) Pixell -30 to +65 OS0 -20 to +50
OS1 -20 to +50
OS2 -5 to +55
CUBE1 – -30 to +60
CUBE Range 1 – 30 to +60
Power Consumption (W) Pixell 20W 20-24W 15W
Water Ingress IP67 IP68/IP69K