Kalustova D. Methods of natural daylight reproduction in lighting systems with tetrachromatic light emitting diodes.

It was developed the method of white light synthesis in the tetrachromatic systems, which uses the condition of minimization of the RGB LEDs’ contribution in the resulting light that allows the simultaneous use of two colour LEDs and one broadband LED to provide the dynamic change of white light hues. It was developed the method of white light synthesis in the tetrachromatic systems wherein a ratio of brightness between red and white LEDs is fixed that reduces the number of control channels to 3 while providing natural values of colour rendering. It was presented the algorithm of determining the space of visual and circadian parameters of the tetrachromatic systems for daylight reproduction. There were proposed criteria for choosing the brightness ratio of the tetrachromatic systems’ components to ensure a comfortable lighting environment. The method of LED control has been improved in the created LED group control system, which differs in the degree of stabilization of the supply.