27.11.2013

Tunnel light for maximum flexibility and little cost and effort

vicolux® Tunnel Lights

The new tunnel light from Vision & Control offers maximum flexibility for relatively low costs of acquisition. It offers advantages primarily for users needing to carry out in-process inspections of their products while they are moving at high speed and with only limited space.

Tunnel lighting can be used instead of wide area vertical lighting and requires much less space in the line. The lighting is used for inspections of one-dimensional curved or axial-symmetrical parts or parts with surfaces which range from glossy to matt. It enables both continuous materials and single products with these characteristics to be illuminated homogeneously without reflections or shadows. This is made possible by its special design. The object being inspected can be moved through the light in a process with linear movement, meaning that high processing speeds are possible without the object stopping. With coaxial light reflection on the through camera view of the tunnel light, it optimizes the illuminance for use as a dome light (cloudy day illumination).

The light can be easily and individually adjusted to the requirements of the specific process environment in terms of luminous field lengths and widths and light colors. The individual modules of the tunnel light are also available as standard products.Tunnel lights are used in combination with area scan cameras. In the pharmaceuticals industry they are used for the identification of color codes on ampules. They are also used for the detection of surface defects which stand out because of their color, such as corrosion on turned parts which are otherwise shiny. In the packaging industry they are used for printed image, completeness and presence checks on (glossy) printwork/labeling on curved containers. Other examples of applications include the detection of coatings on rotationally symmetrical parts with any type of surface, and reading of codes on surfaces with complex shapes or on free-formed surfaces.