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Dark-field lighting

What is dark-field lighting?

Dark field lighting: The light source shines onto the object from a very low angle giving almost no direct reflection. Generally dark-field lighting is used to highlight non-flat surfaces, i.e. faults or structures. A common example is highlighting the edges of the Queen's head on a coin.

Examples of dark field lighting include

Vicolux dark-field light products:

 

Radial ring lights

Application
  • emphasis of surface structure
  • emphasis of particular structures on the object, independent on the orientation of the part
  • optical image preprocessing to brighten the edges of the part
  • requires a small working distance (typically 5 to 20 mm)
Features
  • LED light sources
  • radially directed lighting to the centre
  • Inner diameter Ø21 to Ø127 mm
  • Sensible, robust, metric mounting points!

 

Benefits for the user Vicolux

Reliability......tested standard components rather than unreliable self-developed items
...long-term availability due to ISO certified development, manufacture and distribution
...mechanically, electrically and optically robust
...safe low voltage operation
...long-lived and free from wear and tear
...continuous attention to and further development of the component series

Cost savings...... with standard components rather than costly self-developed items
...simple installation and operation
...world-wide availability
...more straightforward hardware and software solutions
...low operating costs: no costly servicing and maintenance

Speed and flexibility... ...rapid world-wide availability due to standard components
...simple installation and operation
...construction of special solutions from standard components
...a range of possible solutions available

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