A solution for illuminating an area and/or treating a substance with light, such as ultraviolet radiation, is described. The solution can use one or more solid state ultraviolet sources in conjunction with one or more ultraviolet lamps to illuminate a treatment region with ultraviolet radiation. A control component can individually operate the solid state ultraviolet source(s) and the ultraviolet lamp(s) to illuminate the treatment region with ultraviolet radiation having a predetermined minimum ultraviolet intensity.
