Laser emission and reception: The laser emits a laser beam and the receiver records the reflected light.
Scanning and data acquisition: Cover the entire surface of the object by rotating or moving the scanning head.
Data processing: Convert the collected data into a model.
Main technologies
Time of flight (TOF): Calculate the distance by measuring the round-trip time of the laser.
Phase difference method: Calculate the distance by measuring the phase change of the reflected laser.
Triangulation method: Calculate the distance using the geometric relationship between the laser source, receiver and object. Application areas
Architecture and engineering: Used for building measurement, construction monitoring and quality inspection.
Cultural heritage protection: Used for digital recording and restoration of cultural relics and monuments.Manufacturing: used for product design, quality inspection and reverse engineering.
Topographic mapping: used for topographic measurement, geological disaster monitoring and urban planning.
Advantages
High accuracy: can reach millimeter or even sub-millimeter level.
High efficiency: can quickly obtain a large amount of data.
Non-contact: avoid damage to objects.
Comprehensive: can obtain complete three-dimensional information of the object surface.