LEDs tailored at specific wavelengths reveal otherwise hidden or difficult to detect information

Ultraviolet (UV), red, green, and blue lighting can also often reveal more information than provided by white light.

LED lighting provides illumination across all these wavelengths and thus accommodates a wide range of inspection types. If samples present multiple types of defects, each most easily detected by a different wavelength than other defects, simultaneous use of multiple LEDs tuned to different wavelengths may prove useful.

Foodstuff and beverage packaging can cover a wide range of materials, types, and sizes, each of which may have optimal wavelengths of light for inspection applications.