D50, artificial daylight 5000 K

What is D50, artificial daylight 5000 K?

(D50, artificial daylight 5000 K in French: lumière artificielle 5000 K) Artificial daylight with a highly similar color temperature of 5003 Kelvin; standard CIE illuminant which was defined as standard in the printing industry in conjunction with the 2° standard observer field of view for the lighting conditions of printing inks, prints and proofs in color matching and at the central control console and as a white point in color transformations, ICC profile calculations and soft copy proof monitors. Resetting with fluorescent lamps (e.g. Just daylight pro- Graphic) or LEDs (patented Just LED control).