Cloudy day lighting (or cloudy day illumination) are very diffuse incident lights that do not produce any shadows. They are well suited for the inspection of shiny and curved objects. This type of lighting includes dome lighting, tunnel lighting and coaxial lighting.
Tunnel lighting is an elongated, tunnel-like variant of dome lighting. It is ideal for illuminating cylindrical objects made of metallic and shiny materials. Tunnel lighting from Büchner can be found here.
