This invention relates to phototherapy lights, in particular for a combination of Bright Light Therapy and Dawn Simulation. A phototherapy light source having two operational modes, a first dawn simulator mode and a second, bright light therapy mode the light comprising a controller coupled to a light source and wherein, in said first mode said light source is controlled to provide variable illumination with a minimum light intensity of less than 1 lux at 50 centimeters, and in said second mode said light source is controlled to provide illumination with a light intensity of at least 1000 lux at 50 centimeters.
