LIGHTING DEVICE, LED STRIP, LAMP AND LIGHTING DEVICE MANUFACTURING METHOD Russian patent published in 2019 - IPC H05B33/08 

FIELD: lighting.

SUBSTANCE: invention relates to a lighting device for substantially white light radiation with a controlled correlated colour temperature. Result is achieved due to that lighting device (100) intended for radiation of substantially white light with controlled correlated colour temperature includes groups of first light source (110), second light source (120), third light source (130) and controller (140). First light source is designed to emit substantially white light with a colour temperature of more than 5000 kelvin. Second light source is designed to emit substantially white light with a colour temperature of less than 2250 kelvin. Third light source is intended for emitting greenish light. This greenish light in colour space XYZ CIE 1931 has a third colour point within the intersection of half-spaces y1.14x and y-0.0694x + 0.4525. Controller is designed to control light radiation of said light sources.

EFFECT: technical result is providing a lighting device capable of emitting light, having a color point near the line of the black body in a relatively wide range of correlated colour temperatures.

13 cl, 5 dwg