A device including an LED light source optically coupled to a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U.sup.6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U.sup.6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U.sup.6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U.sup.6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U.sup.6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).

A self luminous sign, having an aluminum board, an aluminum frame and at least one luminous module; the luminous module is attached on the aluminum board, and the aluminum board is mounted to the aluminum frame; each luminous module comprises the following components: resins, luminous powder coated with silane coupling agent, antioxidants and UV absorbents in a mass percentage of 100:(30-300):(0.01-10):(0.01-10).

A self luminous sign, having an aluminum board, an aluminum frame and at least one luminous module; the luminous module is attached on the aluminum board, and the aluminum board is mounted to the aluminum frame; each luminous module comprises the following components: resins, luminous powder coated with silane coupling agent, antioxidants and UV absorbents in a mass percentage of 100: (30-300): (0.01-10): (0.01-10).

A device including an LED light source optically coupled to a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U.sup.6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U.sup.6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U.sup.6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U.sup.6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U.sup.6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).

The present invention relates to a composition comprising at least one phosphor.

A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 m or more and 30 m or less, wherein the second fluorescent material comprises a -SiAlON fluorescent material, the circularity of the -SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the -SiAlON fluorescent material is in a range of 2 m or more and 30 m or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 m or more and 200 m or less.

A wavelength converting member comprising a first wavelength converting layer containing: a first fluorescent material having a light emission peak wavelength in a range of 620 nm or more and 660 nm or less; a second fluorescent material having a light emission peak wavelength in a range of 510 nm or more and 560 nm or less; and a resin, wherein the average particle diameter, as measured according to a Fisher Sub-Sieve Sizer method, of the first fluorescent material is in a range of 2 m or more and 30 m or less, wherein the second fluorescent material comprises a -SiAlON fluorescent material, the circularity of the -SiAlON fluorescent material is 0.7 or more, and the volume average particle diameter, as measured according to a laser diffraction scattering particle size distribution measuring method, of the -SiAlON fluorescent material is in a range of 2 m or more and 30 m or less, and wherein the thickness of the first wavelength converting layer is in a range of 50 m or more and 200 m or less.

A method for producing a rare earth aluminate sintered body includes: preparing a molded body by mixing a fluorescent material having a composition of a rare earth aluminate and a raw material mixture comprising an oxide containing at least one rare earth element Ln selected from the group consisting of Y, La, Lu, Gd, and Tb, an oxide containing Ce, an oxide containing Al, and optionally an oxide containing at least one element M.sup.1 selected from the group consisting of Ga and Sc; and calcining the molded body to obtain a sintered body.

A hand held light having a light assembly is disclosed having a substrate carrying a light emitting element. A phosphor layer is disposed atop the substrate and light emitting element. A photoluminescent layer is disposed atop the phosphor layer.

The invention relates to a security feature for securing value documents, comprising a chemically unstable inorganic feature substance and a stabilizing component that comprises a substance that stabilizes the feature substance, which substance has at least the same solubility in water as the feature substance to be protected and releases ions when said substance is decomposed, which ions conform to the ions of the feature substance at least in part.