Covalent’s mission is to level the playing field and ensure that clients of all sizes have access to data generated accurately.

Coherentlight

White light interferometry (WLI) is a non-destructive, non-contact, optical surface topography measurement that uses coherence scanning interferometry to generate 2D and 3D models of surface height.

3D WLI measurement: the figure of Lincoln sitting in his monument on the surface of a US 1 cent coin (barely visible with the naked eye), visualized clearly with WLI.

DIRECT CONNECTION COMPATIBILITY We offer our lights with many different driver configurations to make the lights compatible with the latest vision cameras. This provides greater flexibility, control, and convenience when integrating Metaphase illumination systems.

Collimatedbeam

The two beams, when mixed, form an interference pattern whose intensity can be related to the sample surface height: any difference in optical path length between the reference and sample beams changes the measured interference intensity at each scanned point, providing an indirect measure of the height variance in the sample.

Laser collimation

Using Metaphase’s proprietary optics, the Collimated Line Light works similar to a traditional line light but can project its light at a lower divergence angle. This helps keep a tight, structured beam of light at longer working distance many meters away while delivering high intensity and works great for applications where you can’t have the light close to the object or web. This is useful creating clearance for robotics, imaging high tunnel ceilings, to create distance from hot objects, or applications requiring extremely precise backlight imaging. The Collimated Line Light is a great tool for any line scan or machine vision lighting application.

A beam-splitter divides the white light beam into two optical paths: one that reflects or scatters from the sample and one that reflects from a flat, known reference mirror. These two signal beams are then mixed together and the resulting image is projected onto a CCD image sensor.

White light interferometry (WLI) is a non-destructive, non-contact, optical surface topography measurement that uses coherence scanning interferometry to generate 2D and 3D models of surface height.