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.
The best diffuse incident light is obtained with dome lighting. They provide homogeneous light from all directions and are therefore often referred to as “cloudy day illumination”. They are ideal for shiny and/or uneven test surfaces, as scratches and unevenness are softly illuminated. Surfaces appear quite homogeneous and therefore structureless. It is important to keep […]
