Laser-structured magnetic scales
PTBnews 1.2022
18.01.2022
Mit einem magnetooptischen Viewer gemessene Verteilung der magnetischen Flussdichte des neuen Maßstabs
Magnetic scales are used in various technological areas to measure positions and angles. PTB’s invention allows magnetic scales for precision positioning to be manufactured fast and at low cost. This novel procedure mainly consists in patterning the magnetic film defining the scale by means of a laser. Structure sizes in the micrometer range and sharp transitions between the magnetic domains allow high spatial resolution rates for magnetic measuring systems to be attained with low measurement uncertainties. This ensures a clear reduction of the positioning uncertainty and allows the manufacturing of scales that are suited to being used in precision positioning and measurement systems. The manufacturing procedure is lowcost and suited to high-volume manufacturing. (Technology Offer 491)
Advantages
high spatial resolution in the range of a few micrometers
fast and low-cost manufacturing procedure
use of conventional materials for the scales
Contact person for questions about technology transfer
Andreas Barthel, Phone: +49 531 592-8307, 
andreas.barthel(at)ptb.de, 
www.technologietransfer.ptb.de/en