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Reliable surface control with trevista Multiline

20 May 2014

CVS trevista Multiline, a further development of the innovative surface inspection system CVS trevista, allows inspecting components in rotary or translatory motion.

The new CVS trevista Multline system complements the existing CVS trevista Surface and CVS trevista Cylinder products giving an interesting option for the inspection of components in rotary or translatory motion. The system is particularly suited for process-safe 100% inspection of challenging surfaces at so far unrivalled image quality and excellent cost-effectiveness. In combination with appropriate handling systems it allows a high throughput of components and maximum flexibility.

As with existing trevista systems, the CVS trevista Multiline is based on the Shape-from-Shading technology and employs a special illumination approach to display surface properties of surfaces in fractions of a second and in various result images. The information is separated over two channels: the brightness and the topography of the test specimen are inspected separately. This allows a highly stable, reliable and objective evaluation of surface properties in the µm range and thus leads to a minimum of pseudo rejects.

The special technical feature of CVS trevista Multiline is that the system operates with an area scan camera which reads out the individual sensor lines. This way the test specimens are recorded over several lines. Depending on the application and camera used, this allows inspection speeds of up to 300 mm/s.

The most important advantages of the new trevista Multiline system is that it records 3D information and can make qualitative statements for even the smallest topographical defects. The system allows suppression of brightness and differences in gloss, the inspection of the most diverse materials from shiny metals to matt ceramic surfaces as well as the inspection of curved surfaces.

As illumination and the camera are rigidly connected via a sensor head in this system, elaborate adjustment between camera and illumination is not necessary. The standardised design allows easy in-process integration as well as simple retro-fitting into existing inspection cells. In terms of image evaluation the user can choose between the software environments Common Vision Blox (CVB) by STEMMER IMAGING and Sherlock by Teledyne DALSA.

CVS trevista
  • Complete vision system for the inspection of challenging surfaces
  • Fast and fully automated inspection of components with a 100% coverage using shape- from- shading technology
  • Rugged design for reliable integration into the manufacturing process or into an automatic tester

Puchheim, Germany

STEMMER IMAGING has been one of the leaders in the machine vision market since 1987. It is one of Europe's largest technology providers in this field. In 1997 STEMMER IMAGING presented Common Vision Blox (CVB), a powerful programming library for fast and reliable development and implementation of vision solutions, which has been deployed successfully throughout the world in more than 80,000 imaging applications in various industries.