WHITE LIGHT SOURCE WITHOUT RED SOLID STATE LIGHT SOURCE

The invention provides a light generating system (1000) comprising (a) two or more solid state light sources (100), (b) one or more luminescent materials (200), and an optical filter (410), wherein: (A) the two or more solid state light sources (100) are configured to generate (i) first light (111),...

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Bibliographische Detailangaben
Hauptverfasser: VDOVIN, Olexandr, PEETERS, Martinus
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The invention provides a light generating system (1000) comprising (a) two or more solid state light sources (100), (b) one or more luminescent materials (200), and an optical filter (410), wherein: (A) the two or more solid state light sources (100) are configured to generate (i) first light (111), having a first peak wavelength (λpw1), and (ii) second light (121), having a second peak wavelength (λpw2); wherein the first peak wavelength (λpw1) and the second peak wavelength (λpw2) are selected from the range of 430-495 nm; and wherein | λpw1- λpw2|≥ 10 nm; (B) the one or more luminescent materials (200) are configured to convert part of the one or more of the first light (111) and the second light (121) into luminescent material light (201); wherein the luminescent material light (201) has one or more emission bands with: (C) (i) a first intensity (I1) at one or more first wavelengths selected from a first wavelength range of λ11-λ12; (ii) a second intensity (I2) at one or more second wavelengths selected from a second wavelength range of λ21-λ22; and (iii) a third intensity (I3) at one or more third wavelengths selected from a third wavelength range of λ31-λ32; wherein: λ11 is selected from the range of 485-505 nm; λ12≤λ21; λ12 and λ21 are selected from the range of 520-580 nm; λ22=λ21+λf; λf ≥5 nm; λ22≤λ31; λ22 and λ31 are selected from the range of 570-620 nm; λ32 is selected from the range of 650-780 nm; the optical filter (410) is configured downstream of the one or more luminescent materials (200), wherein the optical filter is configured to reduce the second intensity (I2) relative to the first intensity (I1) and relative to the third intensity (I3); (D) in an operational mode of the light generating system (1000) the light generating system is configured to generate white system light (1001) comprising the first light (111), the second light (121), and the luminescent material light (201). L'invention concerne un système de génération de lumière (1000) comprenant (a) deux ou plusieurs sources de lumière à semi-conducteurs (100), (b) un ou plusieurs matériaux luminescents (200), et un filtre optique (410), dans lequel : (A) les deux sources de lumière à semi-conducteurs ou plus (100) sont conçues pour générer (i) une première lumière (111), ayant une première longueur d'onde de pic (λpw1), et (ii) une seconde lumière (121), ayant une seconde longueur d'onde de pic (λpw2) ; la première longueur d'onde de pic (λpw1) et la seconde longueur d'onde de