Diffuse Lighting

Optical Illumination Technique - Diffuse Lighting

Some of the most difficult targets to properly illuminate are three-dimensional objects that are highly-reflective (e.g. medical devices, electronic components, etc).
With typical lighting, images of these objects usually contain areas with extreme glare, while other parts of the target are dark.
By using a diffuser attachment, light is uniformly spread over an area to provide the best possible illumination for clear observation of the target.

Schematic of specular reflection from a three-dimensional structure

A : Lens B : Light source C : Reflected light enters into the lens to cause glare
D : Reflected light doesn’t reach the lens, creating shadows

A : Lens B : Frosted glass optical filter C : Object

Schematic of diffuse illumination

Diffuse illumination image samples

Screw

Without diffuse illumination

Without diffuse illumination

With diffuse illumination

With diffuse illumination

Mounted solder

Without diffuse illumination

Without diffuse illumination

With diffuse illumination

With diffuse illumination