POLYMER LUMINESCENT COMPOSITION FOR CORRECTING THE LIGHT EMITTED BY LED LIGHT SOURCES Russian patent published in 2022 - IPC C09K11/06 C09K11/02 C08K5/3442 C08L101/00 

FIELD: lighting.

SUBSTANCE: invention relates to the field of lighting engineering, in particular, to polymer luminescent compositions used for manufacturing equipment for general and local lighting. More specifically, the invention relates to polymer luminescent compositions excited by blue light and correcting white light emitted by LED lighting sources, and can be applied, in particular, in diffusers of LED-based lighting equipment. Polymer luminescent composition is intended for reducing the intensity of the blue spectral component of the visible light emitted by LED lighting sources, and includes a transparent polymer and an organic luminophor or a mixture of organic luminophor by the general formula (I),

where Ar represents identical or different arylene or heteroarylene radicals selected from: substituted or unsubstituted thienyl-2,5-diyl by the general formula

substituted or unsubstituted phenyl-1,4-diyl by the general formula (II-b) , substituted or unsubstituted 1,3-oxazole-2,5-diyl by the general formula (II-b) 1,3,4-oxadiazole-2,5-diyl by the general formula (II-g) wherein R₁, R₂, R₃, R₄, R₅ independently represent H or a substituent from linear or branched C₁-C₈alkyl groups, n represents an integer from 1 to 3, R represents H or a substituent from linear or branched C₁-C₈alkyl groups; branched C₃-C ₆alkyl groups separated by at least one silicon atom, wherein the content of organic luminophor in the polymer luminescent composition is 0.001 to 1 wt.%. Also described is an application of the polymer luminescent composition in diffusers of LED-based lighting equipment.

EFFECT: reduced intensity of blue light in the range of emitted visible light of an LED without a reduction in the luminous efficiency thereof, due to the fact that the polymer luminescent composition for correcting the light emitted by LED lighting sources includes a transparent polymer and an organic luminophor or a mixture of organic luminophors by the general formula (I).

11 cl, 8 dwg, 7 ex