Front light illumination producing diffuse, even illumination.
A different method of producing diffuse, uniform illumination is to use a flat
dome. This special form of front light illumination combines the advantages of
coaxial front lights with those of common dome illuminations. A flat dome
enables a shadow-less illumination of most objects. Using a special hole
template on the diffusor, perfect light scattering is secured and homogeneous,
diffuse light is spread over the object. As this illumination occupies less
room than a dome light, it can also be used for applications with limited
space offering close to dome performance.
Application examples range from inspection of blister packages to control of
metal stamping machines monitoring the cuts on reflective surfaces. In general
this technique is suitable for any application requiring an even, shadow-less,
diffuse illumination of curved uneven surfaces.
