Loading patent…
AssigneeSignify Holding B.V.
InventorsMartinus Petrus Joseph Peeters, Rene Theodorus Wegh, Remy Cyrille Broersma, Rene Jan Hendriks, Brankica Jovanovic
Estimating the term…
The invention provides alighting device (1) comprising a solid state light source (10) configured to generate light source light (11) and a converter element (100) configured to convert at least part of the light source light (11) into converter element light (101), wherein the converter element (100) comprises a polymeric host matrix element (120) hosting a particulate first luminescent material (110) of the type M2AX6 doped with tetravalent manganese, wherein M comprises an alkaline cation, wherein A comprises a tetravalent cation, and wherein X comprises a monovalent anion, at least comprising fluorine (F), wherein the particulate first luminescent material (110) is available in the polymeric host matrix element (120) with an average weight percentage x averaged over the polymeric host matrix element (120), wherein the polymeric host matrix element (120) has a first outer face (121), wherein an outer layer volume defined by at least part of the first outer face (121) and a first distance (d1) from said first outer face (121) hosts the particulate first luminescent material (110) with a first local weight percentage y averaged over the outer layer volume with a ratio of the first local weight percentage y over the averaged weight percentage x of y/x≤0.1, and wherein the first distance (d1) is at least 10 μm.
A lighting device comprising a solid state light source configured to generate light source light and a converter element configured to convert at least part of the light source light into converter element light, wherein the converter element comprises a polymeric host matrix element hosting a particulate first luminescent material of the type M2AX6 doped with tetravalent manganese, wherein M comprises an alkaline cation, wherein A comprises a tetravalent cation, and wherein X comprises a monovalent anion, at least comprising fluorine (F), wherein the particulate first luminescent material is available in the polymeric host matrix element with an average weight percentage x averaged over the polymeric host matrix element, wherein the polymeric host matrix element has a first outer face, wherein an outer layer volume defined by at least part of the first outer face and a first distance (d1) from said first outer face hosts the particulate first luminescent material with a first local weight percentage γ averaged over the outer layer volume with a ratio of the first local weight percentage γ over the averaged weight percentage x of y/x≤0.1, wherein the first distance (d1) is at least 10 μm and wherein an outer layer defined by at least part of the first outer face and the first distance (d1) from said first outer face comprises cavities.
Dependencies are inferred from the claim text.