Laser scanners for 2D/3D profile measurement


scanCONTROL and gapCONTROL laser line sensors from Micro-Epsilon are among the highest performing profile sensors in the world considering accuracy and measuring rate. The sensors detect, measure and evaluate profiles on different object surfaces. All available models are suitable for numerous industrial applications. Integrated intelligence in the sensor head (scanCONTROL SMART and gapCONTROL) solves versatile measurement tasks. Models for customer’s own programming are available for integrators. Our scanCONTROL and gapCONTROL sensors do not require any external controller.

Micro-Epsilon laser line sensors (also called laser scanners or profile scanners) are available in different classes (Compact, Highspeed, Smart, gapCONTROL) in order to meet the different user requirements.

Laser triangulation principle

Laser scanners - often referred to as profile sensors - use the laser triangulation principle for two-dimensional profile detection.By using special lenses, a laser beam is enlarged to form a static laser line and is projected onto the targets surface. The optical system projects the diffusely reflected light of this laser line onto a highly sensitive sensor matrix. In addition to distance information (z-axis) the controller also uses this camera image to calculate the position along 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 case of moving objects and traversing sensors, it is therefore possible to obtain 3D measurement values.

Blue Laser Scanner

Laser scanners with blue laser line are preferably used for profile measurement with organic and transparent objects as well as for red-hot glowing metals. While allowing higher stability, the blue laser light does not penetrate the measurement object due to the shorter wavelength of the blue-violet laser. That's why blue laser sensors enable more reliable measurements on red-hot glowing and organic objects compared to red laser sensors.