Patent attributes
The invention relates to a color lighting device comprising at least one light-emitting source (1a, 1b, 1c) fixed on a common substrate (3), each light-emitting source (1a, 1b, 1c) comprising at least one light-emitting diode (LED) (1a, 1b, 1c), each light-emitting source (1a, 1b, 1c) comprising one photosensor (2a, 2b, 2c) that detects the light output only of the associated light source (1a, 1b, 1c), and each light-emitting source (1a, 1b, 1c) being connected to an analog control circuit (4a, 4b, 4c) that controls the drive of each light-emitting source (1a, 1b, 1c) separately on the basis of a light output detected by the associated photosensor (2a, 2b, 2c), while each control circuit (4a, 4b, 4c) comprises a comparator (5a, 5b, 5c) connected to the associated photosensor (2a, 2b, 2c).
