The distance information for the triangulation principle is obtained via the reflection of the laser beam. Thereby, surface roughness in the sub-micrometre range causes interference in the laser spot, whereby false measurement results can be obtained. This physical effect is particularly predominant in shiny objects and cannot be avoided using currently available products on the market. Micro-Epsilon, as a specialist in measurement technology, announces its new optoNCDT 2200LL, which also makes reliable measurements on shiny metallic objects thanks to an oval light spot.
The point-shaped laser beam has now been widened using a special cylindrical lens and projected onto the target. The light spot is absorbed by a receiving array and evaluated. As the light spot is averaged using a special software algorithm, interference is completely filtered out.
Another application area for the optoNCDT 2200LL is structured surfaces, where the distance and not the structure itself need to be measured. The distance information is not influenced by the structure of the surface but instead provides a constantly reliable value of the distance from the target.
Seven different models with measuring ranges of between 2mm and 200mm are available. The optoNCDT 2200LL is based on the successful optoNCDT 2200 model and therefore has all the other advantages of the series, such as fast measured data evaluation or automatic exposure regulation in real-time.