Since 1998, LMI Technologies has worked to advance 3D smart sensor technology for fast and accurate measurement. Their flagship Gocator product line helps factories achieve 100% inspection, reduce waste by optimization, and improve efficiency by simplifying automation. Trusted in the most challenging applications, their 3D solutions help customers improve control of their processes and stay ahead of the competition.
- rubber and tire
WHY YOU NEED 3D
2D isn’t able to scan a part for geometry.
As a result, critical features related to shape are missed.
3D technology captures the shape of an object as opposed to 2D which only captures contrast. With 3D shape, you can measure geometric features on a surface regardless of surface color.
In summary, 3D offers:
- Volumetric measurement (X,Y, and Z-axis) provides shape and position related parameters
- Contrast invariant, ideal for inspecting low contrast objects
- Immune to minor lighting variation or ambient light
- Higher repeatability due to integrated optics, lighting, and pre-calibration
- Simpler to build multi-sensor setups for large object inspection
HOW 3D WORKS
Laser Triangulation vs. Structured Light
A laser triangulation sensor projects a laser pattern from the sensor onto the surface of an object, and images the surface with a camera or receiver array. A processor determines the location of the imaged laser on the camera and calculates the distance from the sensor to the surface.
Lasers are used in triangulation sensors because they efficiently produce small, intense and precisely focused beams that reduce camera exposure times so errors due to object motion blur can effectively be eliminated.
Structured light (fringe projection) uses reflections of one or more light patterns projected onto the object to create a 3D point cloud of the object surface. Stereo cameras in the sensor are used to achieve the highest accuracy and sensor stability.
Blue LED illumination is used to produce high-contrast patterns that deliver high-resolution scanning with excellent ambient light immunity. LED illumination is eye safe, without the need for compliance with laser safety regulations
Call us at 317-253-5900 for more information on our LMI Technologies products.