A nightlight is provided for providing therapeutic effects on the human body and mind including promoting relaxation, sleep and wakefulness. The nightlight includes a housing, a light source, a central processor, one or more controls, and a power supply. The light source produces at least three modes...http://www.google.es/patents/US6902296?utm_source=gb-gplus-sharePatente US6902296 - Nightlight for phototherapy
