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Machine Vision Lights

Photonics.com
May 2011
LATABRequest Info
 
VÄLLINGBY, Sweden, May 9, 2011 — For machine vision applications with small exposure areas, special lighting solutions are provided by LAT elektronik AB (LATAB).

The application range of dark-field lighting covers the detection of edges, defects and contours. The advantages of this lighting technique are realized when the distance between the lighting and the object is very close and when standard devices are not suitable. For these applications LATAB has developed a small dark-field ringlight with an outer diameter of 25 mm that is suitable for miniature cameras with M12 lenses.

Two new spotlights with a 7-mm diameter and a spotlight with a 16-mm diameter fitted with high-performance LEDs allow small exposure areas to be brightly lit, even when they are relatively far away from the object. The spotlights can also be designed as multihead light units, enabling several heads to be jointly operated by one controller. The new lights are available in red and white.



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GLOSSARY
edge detection
In image processing, the location of edges by employing templates that respond to the first or second derivative of gray-scale intensity in the neighborhood of each pixel.
ringlight
A circular lamp or bundles of optical fibers placed around the perimeter of an objective lens to illuminate the object field below it.
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