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Dark-Field Illumination

Industrial Photonics
Oct 2017
EVT Eye Vision Technology GmbHRequest Info
 
KARLSRUHE, Germany — Dark-Field IlluminationThe EyeLight LLA series of dark-field illumination from EVT Eye Vision Technology GmbH is available as an RGB model or in the individual colors of red, green, blue or white.

The dark-field ring lights are available in different inner and outer diameters. The inner diameters vary from 40 to 136 mm and the outer-diameters vary from 74 mm to 174 mm. The LLA series is compact with 20 mm of body height. It works best with working distances ranging from 5 to 10 mm. Diffusion filters and polarization filters are also available.

The rays of the dark-field illumination are refracted from the object. Therefore not all light rays reach the camera lens directly. Typical applications for dark-field illuminations are edge detection and the inspection of embossed imprints or errors such as scratches on metal or other shiny surfaces.


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