Abstract: The present invention firstly relates to a security feature for a security or value document. The security feature comprises a zinc sulfide lurninophore in the form of particles. The zinc sulfide lurninophore has the general chemical formula ZnS: Cux, My, Xz; here, M represents one or more elements from a group comprising the chemical elements Co, In and Ni; X represents one or more elements from a group comprising the halides F, Cl, Br and I; and the following applies: 0 < x < 0.002 and 0 ? y < 0.00015 and 0 ? z < 0.00050. The particles each have cubic phase portions and hexagonal phase portions. When excited by an electrical field, the zinc sulfide luminophore emits a first radiation in the range of the light spectrum between 580 nm and 780 nm. When excited by heating the luminophore to a temperature between 100° C. and 150° C., the zinc sulfide luminophore emits a second radiation in the light spectrum.

Abstract: A light emitting device including a housing, a plurality of heat-sinks adjoined to the housing and insulated from each other, a bottom surface of the heat-sinks being exposed to the outside, a light emitting diode mounted on at least one of the heat-sinks via a conductive adhesive, and a molding member encapsulating the light emitting diode and including thermosetting resin, in which a fluoride luminophore including I and IV group elements with fluorine and other luminophore are dispersed in the molding member, and the luminophores are configured to absorb at least a portion of light emitted from the light emitting diode and emit light having a wavelength different from that of the absorbed light.

Abstract: A method and a device check a security element of a security document. The security element contains at least one particulate substance with electroluminescent properties and at least one field suppression element. The method includes applying an electric excitation field to the security element, generating an optical image of at least one region of the security element after or during the production of the electric excitation field, and detecting local intensity maxima in the optical image. The security element is verified if a number of local intensity maxima present at different image positions is greater than or equal to a specified number, the number being at least two.

Abstract: Method and device for testing a security element (4) of a security document, the security element (4) being able to contain at least one substance (5) which has optically variable properties, including the following method steps: illuminating the security element (4) with at least one predetermined illumination parameter, filtering the light reflected by the security element into a first component (RLp) having a first polarisation, determining an intensity (I) of the first component (RLp) of reflected light reflected at a reflection angle (?R), for at least one reflection angle (?R), and verifying the presence of a substance (5) which has optically variable properties as a function of the intensity (I) of the first component (RLp).

Abstract: A light emitting device including a housing, a plurality of heat-sinks adjoined to the housing and insulated from each other, a bottom surface of the heat-sinks being exposed to the outside, a light emitting diode mounted on at least one of the heat-sinks via a conductive adhesive, and a molding member encapsulating the light emitting diode and including thermosetting resin, in which a fluoride luminophore including I and IV group elements with fluorine and other luminophore are dispersed in the molding member, and the luminophores are configured to absorb at least a portion of light emitted from the light emitting diode and emit light having a wavelength different from that of the absorbed light.

Abstract: A light-emitting device including a substrate, a first light-emitting diode disposed on the substrate, a molding member encapsulating the first light-emitting diode, and luminophores dispersed in the molding member and including a surface-modified luminophore, in which the surface-modified luminophore includes a fluorinated coating and a fluoride luminophore including a manganese activator. The fluoride luminophore is selected from the group consisting of K2SiF6, Na2SiF6, Rb2SiF6, K2GeF6, Na2GeF6, and Rb2GeF6.

Abstract: A light-emitting device including a substrate, a first light-emitting diode disposed on the substrate, a molding member encapsulating the first light-emitting diode, and luminophores dispersed in the molding member and including a surface-modified luminophore, in which the surface-modified luminophore includes a fluorinated coating and a fluoride luminophore including a manganese activator. The fluoride luminophore is selected from the group consisting of K2SiF6, Na2SiF6, Rb2SiF6, K2GeF6, Na2GeF6, and Rb2GeF6.

Abstract: The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range than 345 nm to 370 nm, and can thus emit photoluminescent light in the blue color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm in 335 nm, and can thus emit photoluminescent light in the green color region of the visible spectrum.

Abstract: A light-emitting device including a light-emitting diode and a surface-modified luminophore. The surface-modified luminophore includes a luminophore including a manganese activator and a fluorine compound fixed to the luminophore.

Abstract: The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green colour region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 345 nm to 370 nm, and can thus emit photoluminescent light in the blue colour region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm to 335 nm, and can thus emit photoluminescent light in the green colour region of the visible spectrum.

Abstract: Method and device for testing a security element (4) of a security document, the security element (4) being able to contain at least one substance (5) which has optically variable properties, including the following method steps: illuminating the security element (4) with at least one predetermined illumination parameter, filtering the light reflected by the security element into a first component (RLp) having a first polarisation, determining an intensity (I) of the first component (RLp) of reflected light reflected at a reflection angle (?R), for at least one reflection angle (?R), and verifying the presence of a substance (5) which has optically variable properties as a function of the intensity (I) of the first component (RLp).

Abstract: A light-emitting device including a light-emitting diode and a surface-modified luminophore. The surface-modified luminophore includes a luminophore including a manganese activator and a fluorine compound fixed to the luminophore.

Abstract: A surface-modified quantum dot luminophore includes a quantum dot luminophore and a coating includes a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and the coating is disposed on the surface of the silicate luminophore.

Abstract: Exemplary embodiments of the present invention relate to a light emitting device including a light emitting diode and a surface-modified luminophore. The surface-modified luminophore includes a quantum dot luminophore and a fluorinated coating arranged on the quantum dot luminophore.

Abstract: A method and a device check a security element of a security document. The security element contains at least one particulate substance with electroluminescent properties and at least one field suppression element. The method includes applying an electric excitation field to the security element, generating an optical image of at least one region of the security element after or during the production of the electric excitation field, and detecting local intensity maxima in the optical image. The security element is verified if a number of local intensity maxima present at different image positions is greater than or equal to a specified number, the number being at least two.

Abstract: Exemplary embodiments of the present invention relate to light emitting devices including strontium oxyorthosilicate-type phosphors. The light emitting device includes a light emitting diode, which emits light in the UV or visible range, and phosphors disposed around the light emitting diode to absorb light emitted from the light emitting diode and emit light having a different wavelength from the absorbed light. The phosphors include an oxyorthosilicate phosphor having a general formula of Sr3-x-y-zCaxMIIySiO5: Euz with a calcium molar fraction in the range of 0<x?0.05.

Abstract: A surface-modified silicate luminophore includes a silicate luminophore and a coating includes at least one of (a) a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and (b) a combination of the fluorinated coating and at least one moisture barrier layer. The moisture barrier layer includes MgO, Al2O3, Y2O3, La2O3, Gd2O3, Lu2O3, and SiO2 or the corresponding precursors, and the coating is disposed on the surface of the silicate luminophore.

Abstract: Exemplary embodiments of the present invention disclose inorganic luminescent substances with Eu2+-doped silicate luminophores, in which solid solutions in the form of mixed phases between alkaline earth metal oxyorthosilicates and rare earth metal oxyorthosilicates are used as base lattices for the Eu2+ activation leading to the luminescence. These luminophores are described by the general formula (1-x) MII3SiO5.xSE2SiO5:Eu, in which MII preferably represents strontium ion or another alkaline earth metal ion, or another divalent metal ion selected from the group consisting of the magnesium, calcium, barium, copper, zinc, and manganese. These ions may be used in addition to strontium and also as mixtures with one another.

Abstract: A surface-modified quantum dot luminophore includes a quantum dot luminophore and a coating includes a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and the coating is disposed on the surface of the silicate luminophore.

Abstract: Exemplary embodiments of the present invention relate to a light emitting device including a light emitting diode and a surface-modified luminophore. The surface-modified luminophore includes a quantum dot luminophore and a fluorinated coating arranged on the quantum dot luminophore.