Abstract: This red lamp including a blue LED as a light source for emitting blue light, and a red light-emitting member illuminated by blue light. The red light-emitting member of the red lamp includes a resin, and a complex fluoride phosphor which is a complex fluoride salt activated by manganese, that absorbs blue light and emits light containing a red component. This high-efficiency red lamp has intense light emission, providing good visibility at both the lamp front surface and the sides of the lamp, and is suitable as a lighting system for vehicle, such as a red taillight, red brake light, or the like.

Abstract: Disclosed is a wavelength conversion member which is a resin-molded article having dispersed therein a complex fluoride fluorophore that absorbs light with a blue wavelength component and emits light including a red wavelength component and that is represented by A2(M1-xMnx)F6 (in the formula: M is at least one type of tetravalent element selected from Si, Ti, Zr, Hf, Ge, and Sn; A is at least one type of alkali metal selected from Li, Na, K, Rb, and Cs and including at least Na and/or K; and x is from 0.001 to 0.3), wherein the hue of the wavelength conversion member when light is not emitted is as follows in CIELAB (CIE 1976): L*=from 40 to 60 inclusive; a*=from 0 to +1 inclusive; and b*=from +2 to +15 inclusive.

Abstract: Disclosed is an adjustment component that: includes a complex fluoride fluorophore represented by A2(M1-xMnx)F6 (in the formula: M is one or two or more of type of tetravalent element selected from Si, Ti, Zr, Hf, Ge, and Sn; A is one or two or more of type of alkali metal selected from Li, Na, K, Rb, and Cs and including at least Na and/or K; and x is from 0.001 to 0.3); and adjusts the chromaticity and/or color rendering index of illumination light by absorbing light having a wavelength of from 420 nm to 490 nm inclusive, and emitting light including a red wavelength component.

Abstract: A blue-light emitting device, or a pseudo-white-light emitting device, including an LED light source that includes, as a light emission component, blue light having a wavelength of from 420 to 490 nm. A color-renderability improvement member including a complex fluoride fluorophore that absorbs blue light and emits red light and that is represented by A2(M1-xMn)F6 (M is at least one type of tetravalent element selected from Si, Ti, Zr, Hf, Ge, and Sn; A is at least one type of alkali metal selected from Li, Na, K, Rb, and Cs and including at least Na and/or K; and x is from 0.001 to 0.3) is arranged in a location that is outside a region onto which light parallel to the light emission axis of the LED light source is emitted, said region being within a region onto which light is emitted from the LED light source.

Abstract: A wavelength conversion member which is a resin-molded article made of at least one type of thermoplastic resin selected from polyolefins, polystyrene, styrene copolymers, fluorocarbon resins, acrylic resins, nylons, polyester resins, polycarbonate resins, vinyl chloride resins, and polyether resins. The thermoplastic resin contains less than or equal to 30 mass % of a complex fluoride fluorophore represented by A2(M1-xMnx)F6 (M is at least one type of tetravalent element selected from Si, Ti, Zr, Hf, Ge, and Sn; A is at least one type of alkali metal selected from Li, Na, K, Rb, and Cs and including at least Na and/or K; and x is from 0.001 to 0.3) and having a particle diameter D50, which is the median diameter at a cumulative volume of 50% in particle size distribution, of from 2 ?m to 200 ?m inclusive. The complex fluoride fluorophore being dispersed in the thermoplasticresin.

Abstract: A red phosphor in the form of a Mn-activated complex fluoride having the formula: A2MF6:Mn wherein M is one or more tetravalent elements selected from Si, Ti, Zr, Hf, Ge, and Sn, and A is one or more alkali metals selected from Li, Na, K, Rb, and Cs, and contains at least Na and/or K, is surface treated with a treating solution containing a surface treating agent selected from an organic amine, quaternary ammonium salt, alkyl betaine or fluorochemical surfactant, alkoxysilane, and fluorinated polymer.

Abstract: A complex fluoride A2MF6 wherein M is a tetravalent element Si, Ti, Zr, Hf, Ge or Sn, A is an alkali metal Li, Na, K, Rb or Cs is prepared by providing a first solution containing a fluoride of M, providing a second solution containing a compound of A and/or the compound of A in solid form, mixing the first solution with the second solution and/or the solid for reacting the fluoride of M with the compound of A, and recovering the resulting solid product via solid-liquid separation.

Abstract: A complex fluoride A2MF6 wherein M is a tetravalent element Si, Ti, Zr, Hf, Ge or Sn, A is an alkali metal Li, Na, K, Rb or Cs is prepared by providing a first solution containing a fluoride of M, providing a second solution containing a compound of A and/or the compound of A in solid form, mixing the first solution with the second solution and/or the solid for reacting the fluoride of M with the compound of A, and recovering the resulting solid product via solid-liquid separation.

Abstract: A titanium oxide powder containing 0.2 to 25% by weight of niobium or tantalum is provided. The titanium oxide powder has a diffuse reflectance spectrum such that the reflectance at the wavelength at which the reflectance is maximum in the visible range is at least 50%, and the reflectance in infrared range of 1000 to 2500 nm is equal to or less than half of the maximum reflectance of the visible range. The present invention is capable of producing a titanium oxide fine particle powder as well as its dispersion having infrared cutoff property which can be used in producing an infrared cutoff film, transparent heat blocking film, and the like. The powder contains inexpensive harmless titanium oxide as its main component.

Abstract: Oxo-acid salts, halogenated oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf and 0.001-5 atom % of Mn. They emit radiation in the visible range of 390-750 nm when excited with vacuum-ultraviolet radiation.

Abstract: Oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf. They emit near-ultraviolet radiation when excited with vacuum-ultraviolet radiation.

Abstract: A rare earth phosphate represented by the formula: RPO4 wherein R is a rare earth element selected from Sc, Y, and lanthanoids of atomic numbers 57 to 71, wherein Mn substitutes for 0.01-15 atom % of R emits blue light when excited by vacuum-UV radiation.

Abstract: A heat-resistant coated member comprises a substrate composed of a material selected from among molybdenum, tantalum, tungsten, zirconium, aluminum, titanium, carbon, and alloys, oxide ceramics, non-oxide ceramics and carbide materials thereof, which is covered with a layer composed primarily of a rare earth-containing oxide. In addition to heat resistance, the coated member has good corrosion resistance and non-reactivity, making it highly suitable as a part for sintering or heat-treating metals and ceramics in a vacuum, an inert atmosphere or a reducing atmosphere.

Abstract: Oxo-acid salts, halogenated oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf and 0.001-5 atom % of Mn. They emit radiation in the visible range of 390-750 nm when excited with vacuum-ultraviolet radiation.

Abstract: Oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf. They emit near-ultraviolet radiation when excited with vacuum-ultraviolet radiation.

Abstract: A rare earth phosphate represented by the formula: RPO4 wherein R is a rare earth element selected from Sc, Y, and lanthanoids of atomic numbers 57 to 71, wherein Mn substitutes for 0.01-15 atom % of R emits blue light when excited by vacuum-UV radiation.

Abstract: A heat-resistant coated member comprises a substrate composed of a material selected from among molybdenum, tantalum, tungsten, zirconium, aluminum, titanium, carbon, and alloys, oxide ceramics, non-oxide ceramics and carbide materials thereof, which is covered with a layer composed primarily of a rare earth-containing oxide. In addition to heat resistance, the coated member has good corrosion resistance and non-reactivity, making it highly suitable as a part for sintering or heat-treating metals and ceramics in a vacuum, an inert atmosphere or a reducing atmosphere.

Abstract: A heat-resistant coated member comprises a substrate composed of a material selected from among molybdenum, tantalum, tungsten, zirconium, aluminum, titanium, carbon, and alloys, oxide ceramics, non-oxide ceramics and carbide materials thereof, which is covered with a layer composed primarily of a rare earth-containing oxide. In addition to heat resistance, the coated member has good corrosion resistance and non-reactivity, making it highly suitable as a part for sintering or heat-treating metals and ceramics in a vacuum, an inert atmosphere or a reducing atmosphere.

Abstract: Rare earth-containing compound particles of polyhedral shape having an average particle diameter of 3-100 &mgr;m, a dispersion index of up to 0.5, and an aspect ratio of up to 2 can be thermally sprayed to form an adherent coating, despite the high melting point of the rare earth-containing compound. A sprayed component having the particles spray coated on a substrate surface is also provided.

Abstract: A heat-resistant coated member comprises a substrate composed of a material selected from among molybdenum, tantalum, tungsten, zirconium, aluminum, titanium, carbon, and alloys, oxide ceramics, non-oxide ceramics and carbide materials thereof, which is covered with a layer composed primarily of a rare earth-containing oxide. In addition to heat resistance, the coated member has good corrosion resistance and non-reactivity, making it highly suitable as a part for sintering or heat-treating metals and ceramics in a vacuum, an inert atmosphere or a reducing atmosphere.