3D Laser Profile Sensor

Measurement principle: When a beam of laser irradiates the measured object at a certain angle of incidence, the laser will reflect and scatter on the surface of the object. At this point, a lens can be used to converge and image the reflected laser onto the image sensor at another angle. When the measured object moves in the direction of the laser, the light spot on the image sensor will also move, and its displacement corresponds to the distance of the measured object's movement. From this, algorithm design can be used to calculate the movement distance of the measured object relative to the baseline.

The laser module produces a line of laser light that is projected on the object surface, diffusely reflected by the object, imaged and captured by the image sensor. The image processor calculates the spatial position of the object where the laser is projected, and obtains the width information of the laser profile in the X direction and the depth information in the Z direction. According to he relative movement of the measured object and the sensor, a series of profile information is obtained for fusion, and the complete three-dimensional shape of the object can be obtained.