The Sun is a source of the full spectrum of ultraviolet radiation, which is commonly subdivided into UV-A, UV-B, and UV-C. The typical light source spectrum wavelength ranges from Ultraviolet Light (UVC 200 to 280nm, UVB: 280 to 315nm, UVA 315 to 400nm) to Visible Light (400 to 760nm) and Infrared Light (760 to 3000nm). LED UV lights have a narrow spectral output centered around a specific wavelength, +/- 10nm. Phoseon products use 365nm, 385nm, 395nm, or 405nm wavelengths. This near-monochromatic distribution (see chart) requires new chemical formulations to ensure proper curing of inks, coatings, and adhesives.