Micro-Epsilon has developed Blue Laser Technology for measuring tasks on demanding surfaces. This technology is used in optical displacement and distance measurements on incandescent, organic or (semi) transparent objects. According to the company, the Blue Laser sensors provide extremely stable signals while offering excellent focusing.
Measurements with blue laser triangulation sensors on incandescent objects exceeding 700 ° C and (semi) transparent objects are protected by a patent and can therefore only be performed with blue laser sensors from Micro-Epsilon. Transparent objects include plastic, glass, adhesives, silicone, paints, coatings, plexiglass and sealants.
“With the innovative Blue Laser technology, the wide range of functions combined with exceptional performance, the optoNCDT 1750BL laser line triangulation sensor has risen to the rank of leader in its category. Besides the paper industry, it is used in the metal, ceramic, semiconductor, food, wood and medical technology industries, where the sensor performs real-time quality checks and reliably. The small optoNCDT 1750BL light spot also detects the tiniest of components. Its compact construction makes it possible to integrate the sensor, even in small installation spaces, ”explains Micro-Epsilon.
Depending on the model, the sensor is available for measuring ranges from 20 to 750 mm. The settings for the measurement task and the call up of predefined presets are carried out via a user-friendly web interface.
Distance measurement on paper pulp
The new optoNCDT 1750BL from Micro-Epsilon is able to solve a measurement task not previously possible with conventional laser sensors. This measuring task is performed during the transition from pulp to solid paper web. Measuring at an early stage in the process allows for early detection of any deviations in parameters, saving material and costs. Thanks to the patented Blue Laser technology, the sensor installed in line measures during the production of quality paper, on an almost transparent pulp. "Sensors with a red laser light fail with this measurement, because the red laser shines through the still wet pulp and does not deliver any stable signal", explains one within the company.
Diffuse measurement of transparent plastic measuring objects is another measuring task that can only be solved with blue laser technology. The blue laser process for laser sensors, patented by Micro-Epsilon in many countries, enables precise and unique distance measurement on transparent materials. “Typically, laser triangulation sensors work with red laser light. With their wavelength range of 670 nm, these sensors reach their physical limits with incandescent, organic or (semi) transparent objects. Patented Blue Laser technology measures with a wavelength of 405 nm. This is why the laser light which does not penetrate into the objects designated above, reproduces an extremely compact measuring spot while achieving highly precise results, thus reproducing a sharp measuring spot while achieving highly precise results ", says one at Micro-Epsilon.