US Patent 11252874 Light source module for plant cultivation

A light source module for plant cultivation includes a main light source, an auxiliary light source unit, and a controller. The main light source unit emits background light which is visible light for growth of a plant. The auxiliary light source unit emits auxiliary light including UVB, UVC, or both to increase the content of phytochemicals in the plant. The controller controls operation of the main light source unit and the auxiliary light source unit based on a control signal.