METHOD AND DEVICE TO CONTROL THE LUMINANCE OF THE LIGHTING Russian patent published in 2017 - IPC G09G5/10 

FIELD: lighting.

SUBSTANCE: method contains: the control command receipt for adjusting the luminance instantaneous value up to the target luminance value, the first unit illumination lamps current supply stoppage, determination of the current instantaneous value, required for the illumination lamps of the second unit to achieve the target luminance value and providing the first target current value for the illumination lamps of the second unit, if the instantaneous illumination value is greater than the first threshold value, and the target luminance value is less than the first threshold value. Since the luminance lamps of the first unit do not emit the light, the luminance loss is to be compensated by increasing the target current value, supplied to the luminance lamps of the second unit. Further, the first total operating time of the first unit and the second total operating time of the second unit are determined, the current supply to the luminance lamps of the first unit is stopped, if the first total operating time exceeds the second total operating time.

EFFECT: provision of the stable light emission, while the luminance lamps are operating with the ultra-low luminance.

11 cl, 3 dwg