LAMP Russian patent published in 2019 - IPC A01G9/20 A01G7/04 H05B33/00 

FIELD: lighting.

SUBSTANCE: invention relates to lighting devices providing illumination with light simulating a spectrum of sunlight by using light emitting diodes. Lamp contains a set of known LEDs with different emission spectra lying in the frequency range of the order of 400–800 nm, supplied with power drivers. Lamp used LEDs, the peaks of the emission spectra of which are in the frequency range 483–654 nm. Spectra of the LEDs used overlap in different spectral regions of the range, preferably at a level of 0.4–0.8 of the maximum amplitude at the centre frequency of the radiation. In this case, four types of light emitting diodes of different spectrum with a power from 0.1 to 200 W are used, and the emitted spectrum includes the emission spectra of such LEDs as Blue-Green, Green, Warm White and Red Light, with a possible deviation from the centre frequency at ±20 nm. Drivers of these LEDs are made with the possibility of supplying the power supply of such a magnitude that the level of luminous flux from the corresponding LEDs is equal to 1.52; 1.34; 1.69 from the level of the luminous flux emitted by the Red Light LED, with the possible deviation of the indicated energy values by ±25 %, or each type of spectrum is formed by a set of similar LEDs emitting light of the same frequency, with the ability to generate the power of the light flux, the same for each type of spectrum. Besides these LEDs have a maximum emission at frequencies of 490, 524, 587 and 634 nm, respectively, with a possible deviation from the centre frequency at ±20 nm.

EFFECT: technical result consists in providing the luminaire with a radiation spectrum close to that of sunlight in the simulated frequency range, while minimizing the total number of LEDs used.

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