Infra-Red Scanners
Infra-red scanners share a lot of similarities to laser baser 3D scanning devices except instead of using a spinning mirror and laser to cast beams out to measure depth data infra-red rays are sent out instead. These are more commonly used for handheld 3D scanning processes vs static laser-based alternatives.
Infra-Red scanners are the Device
LiDAR Scanning
Light Detection and Ranging
LiDAR scanners measure the range and structure of the environment using penetrating laser light pulses. LiDAR is the technology whereas Lasers are the devices used to emit the pulses.
LiDAR is the Technology / Process
Advantages
Inexpensive alternative to Laser Scanning
Ability to capture small to medium-scale objects and spaces effectively
Relatively fast and instant compared to some alternatives
Disadvantages
Can suffer from infra-red interference during scanning process when outside
Depth range is shorter than Laser based options
Has issues with certain surfaces (see challenges with 3D scanning section)
Most Common Use cases:
Conservation and preservation of objects and spaces, Walkthroughs and virtual tours, Entry level 3D scanning for 3D Printing