Fraunhofer Institute for Physical Measurement Techniques IPM
Precise surface measurement and defect recognition
Precision demands for components and machines are continually increasing. This is particularly evident in high-tech industries, such as aerospace, electronics, automotive, and medical technology. Accurately measuring each essential component during production is crucial in these industries to prevent waste and recalls of entire high-value systems. However, in mass production components are usually spot-checked visually for defects rather than measured dimensionally. This no longer meets the growing demands for a 100 percent quality control.
With HoloTop, Fraunhofer IPM offers an optical sensor system for 3D inline measurements based on digital multi-wavelength holography. HoloTop sensors provides contactless, precise and quick component measurement, while also recording the topography even of rough surfaces with interferometric precision. The systems combine high measurement speeds with industrial-grade robustness, making them ideal for direct integration into production equipment and machinery.
A variety of applications thanks to flexible system design
In addition to the various laser sources used to illuminate the object, the HoloTop sensors' most important components include an area scan camera and a high-quality lens. The sensor technology can be adapted to various measurement fields, pixel resolutions, measurement speeds, and surface or environmental conditions by adjusting these components. This allows for a wide range of applications, including measuring precision-turned metal surfaces for diesel injectors, extremely fine microbump structures for contacting computer chips, and large-area measurement of electronic circuit boards for high-current applications.
There are HoloTop sensors to suit every application: The compact HoloTop NX sensors are designed for established multi-axis systems, including coordinate measuring machines. The sensors in the HoloTop Motion series provide high-resolution measurements of moving objects, even over large areas.