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Laser triangulation

Laser line triangulation

Laser scanners from Micro-Epsilon - often referred to as profile sensors -use the laser triangulation principle for two-dimensional profile detection on different target surfaces. By using special lenses, a laser beam is enlarged to form a static laser line and is projected onto the target surface. The optical system projects the diffusely reflected light of this laser line onto a highly sensitive sensor matrix. From this matrix image, the controller calculates the distance information (z-axis) and the position alongside the laser line (x-axis). These measured values are then output in a two-dimensional coordinate system that is fixed with respect to the sensor. In the case of moving objects or a traversing sensor, it is therefore possible to obtain 3D measurement values.


Laser triangulation

Triangulation means distance measurement by angle calculation. In measurement technology, a sensor projects a laser spot onto the Measurement object . The reflected light falls incident onto a receiving element at a certain angle depending on the distance. From the position of the light spot on the receiver element and the distance from the sender to the receiver element, the distance to the Measurement object is calculated in the sensor.