MULTIELEMENT COLOUR RADIATION SOURCE Russian patent published in 2013 - IPC H01L27/15 

FIELD: physics.

SUBSTANCE: multielement colour radiation source includes a plurality of light-emitting diode (LED) light sources of different colours for obtaining light of a mixed colour, optically interfaced with a screen, and a device for controlling the LED light sources in accordance with differences between given values, which represent light of a mixed colour, having the required colour, and control data representing the colour of the light of mixed colour generated by said LED light sources, wherein said control data are provided by at least one colour sensor connected to the input of the control device; the LED light sources are connected to corresponding outputs of the control device, wherein the colour sensor is interfaced with the screen; the plurality of LED light sources consist of at least one cluster, having at least one LED light sources of each colour; the clusters are combined into a LED array; the number of outputs of the control device connected to the plurality of LED light sources of each colour corresponds to the number of supply groups for the given colour, and the value of supply current of a group is determined from a given relationship.

EFFECT: uniformity of power illumination of a screen with the possibility of changing the illumination colour in a wide range of colours.

5 cl, 7 dwg