LUMINAIRE Russian patent published in 2018 - IPC A01G7/04 

FIELD: lighting equipment.

SUBSTANCE: invention relates to lighting devices, providing the illumination of plants with light, as much as possible corresponding to the spectrum of sunlight due to use of light-emitting diodes. When illuminated, LEDs are used whose emission spectra are in the range 410–660 nm. Spectra of used LEDs overlap each other in different spectral regions of the range, preferably at the level of 0.4–0.6 of the maximum amplitude at the central frequency of the radiation. Seven types of light-emitting diodes of different power spectrum are used, which provides the luminaire with a spectrum of radiation close to sunlight. Emitted spectrum includes the emission spectra of such LEDs as Warm White, Purple, Royal Blue, Blue, Cyan, Green and Vegetable Light. Drivers of said LEDs are configured to supply power of such a value that the level of the light flux from the corresponding LEDs is equal 0.94; 0.77; 0.15; 0.66; 0.81; 0.89 from the level of the light flux emitted by the LED Vegetable light, with a possible deviation of these values of energy by ±30 %. Type of the spectrum is formed by a set of the same type of LEDs with the ability to generate the power of the light flux, which is the same for each particular type of spectrum. These LEDs have the maximum radiation at frequencies respectively 587, 413, 437, 460, 490, 524 and 650 nm.

EFFECT: use of the invention will enable to provide the luminaire a spectrum of radiation corresponding to sunlight in the range 410–660 nm.

3 cl, 6 dwg, 3 tbl