ULTRAVIOLET LIGHT DISINFECTION SYSTEM AND METHOD

A multispectral light source for disinfection is disclosed, including a plurality of light sources with different disinfection peak wavelengths and electronics. Each disinfection peak wavelength is effective for disinfection, and the electronics are configured to drive the plurality of light sources to emit light at the different disinfection peak wavelengths. In a specific embodiment, multispectral light source includes one or more UV-C light sources emitting ultraviolet light in a UV-C range, and one or more UV-A light sources emitting ultraviolet light in a UV-A range. The multispectral light source optionally may further include one or more white light sources emitting white light providing illumination. In a disinfection method, light in the UV-C range is emitted into an occupied space, and light outside of the UV-C range that is effective for inactivating at least one target pathogen is also emitted, optionally simultaneously, into the occupied space.