Abstract: A spraying material comprising a rare earth (R), aluminum and oxygen, the spraying material being a powder and comprising a crystalline phase of a rare earth (R) aluminum monoclinic (R4Al2O9) and a crystalline phase of a rare earth oxide (R2O3), with respect to diffraction peaks detected within a diffraction angle 2? range from 10° to 70° by a X-ray diffraction method using the characteristic X-ray of Cu-K?, the spraying material having diffraction peaks attributed to the rare earth oxide (R2O3) and diffraction peaks attributed to the rare earth (R) aluminum monoclinic (R4Al2O9), and an intensity ratio I(R)/I(RAL) of an integral intensity I(R) of the maximum diffraction peak attributed to the rare earth oxide (R2O3) to an integral intensity I(RAL) of the maximum diffraction peak attributed to the rare earth aluminum monoclinic (R4Al2O9) being at least 1.

Abstract: A spraying material comprising a rare earth (R), aluminum and oxygen, the spraying material being a powder and comprising a crystalline phase of a rare earth (R) aluminum monoclinic (R4Al2O9) and a crystalline phase of a rare earth oxide (R2O3), with respect to diffraction peaks detected within a diffraction angle 2? range from 10° to 70° by a X-ray diffraction method using the characteristic X-ray of Cu-K?, the spraying material having diffraction peaks attributed to the rare earth oxide (R2O3) and diffraction peaks attributed to the rare earth (R) aluminum monoclinic (R4Al2O9), and an intensity ratio I(R)/I(RAL) of an integral intensity I(R) of the maximum diffraction peak attributed to the rare earth oxide (R2O3) to an integral intensity I(RAL) of the maximum diffraction peak attributed to the rare earth aluminum monoclinic (R4Al2O9) being at least 1.

Abstract: Provided is a wavelength conversion member in which the following are dispersed in a thermoplastic resin: a LuYAG fluorescent material that is represented by (Y1-?-?Lu?Ce?)3Al5O12 (in which ? is a positive number between 0.3-0.8 inclusive and ? is a positive number between 0.01-0.05 inclusive), that emits yellow-green light as a result of excitation by blue light, and that has a diffraction peak within a range in which the diffraction angle 2? in X-ray diffraction by the K?1 line of Cu is 52.9° to 53.2° inclusive; and a KSF fluorescent material that is represented by K2(Si1-xMnx)F6 (in which x is a positive number between 0.001 and 0.3 inclusive) and that emits red light as a result of excitation by blue light. The content of the KSF fluorescent material in the wavelength conversion member is 1 to 5 times the content of the LuYAG fluorescent material by mass ratio.

Abstract: A turn signal for a vehicle has a blue LED as a light source, and an outer cover irradiated by the blue light. The outer cover includes a molded body of a polymeric material including phosphors dispersed therein that absorb blue light and emit light. By means of the present invention, it is possible to provide a turn signal for vehicles which has improved visibility and which imparts excellent visibility and sufficient luminous intensity over a wide angle. Further, because the entire outer cover surface-emits light, uniformity of luminous intensity is ensured without subjecting the outer cover to light scattering treatment, enabling as a result preventing glare caused by light scattering treatment, making this turn signal safe without being unpleasant for pedestrians and drivers of nearby vehicles. Furthermore, because no complex optical design is necessary, this turn signal saves space and can be arranged in a vehicle.

Abstract: This lighting apparatus is provided with a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a fluorescent material-containing resin layer disposed on the front of the blue LED chip in the light emission direction. The fluorescent material-containing resin layer is obtained by mixing and dispersing a LuAg fluorescent material, which is represented by the formula Lu3Al5O12:Ce3+ and in which the Ce activation rate is 2 mol. % or lower relative to Lu, and a double fluoride fluorescent material represented by the formula A2(B1?xMnx)F6 (in the formula, A is at least one type of element selected from among the group consisting of Li, Na, K and Cs, B is at least one type of element selected from among the group consisting of Si, Ti, Nb, Ge and Sn, and x is an integer that falls within the range 0.001?x?0.1) in a resin.

Abstract: An outdoor luminaire comprising a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a phosphor layer disposed forward of the LED chip in its emission direction is provided. The phosphor layer comprises a phosphor of the formula: Lu3Al5O12:Ce3+ which is activated with up to 1 mol % of Ce relative to Lu, the phosphor being dispersed in a resin. In scotopic and mesopic vision conditions, the luminaire produces illumination affording brighter lighting, higher visual perception and brightness over a broader area.

Abstract: Provided is a wavelength conversion member in which the following are dispersed in a thermoplastic resin: a LuYAG fluorescent material that is represented by (Y1-?-?Lu?Ce?)3Al5O12 (in which ? is a positive number between 0.3-0.8 inclusive and ? is a positive number between 0.01-0.05 inclusive), that emits yellow-green light as a result of excitation by blue light, and that has a diffraction peak within a range in which the diffraction angle 2? in X-ray diffraction by the K?1 line of Cu is 52.9° to 53.2° inclusive; and a KSF fluorescent material that is represented by K2(Si1-xMnx)F6 (in which x is a positive number between 0.001 and 0.3 inclusive) and that emits red light as a result of excitation by blue light. The content of the KSF fluorescent material in the wavelength conversion member is 1 to 5 times the content of the LuYAG fluorescent material by mass ratio.

Abstract: This LED light source for a vehicle-mounted headlight is provided with: a blue LED that emits blue light having a dominant wavelength of 430-470 nm; and a fluorescent material that is arranged forward in the light emission direction of the blue light and that performs wavelength conversion of the blue light. The main fluorescent material constituting the fluorescent material is a celium-activated lutetium/aluminum/garnet fluorescent material represented by Lu3Al5O12:Ce. The LED light source for a vehicle-mounted headlight emits pseudo-white light that has a color temperature of 6,000 K or less and that is unlikely to decrease in visibility even during bad weather. The LED light source for a vehicle-mounted headlight has characteristics such as a wide lighting range and excellent visibility in the peripheral area of the visual field (the peripheral visual field) and can thus contribute to accident prevention and road traffic safety.

Abstract: Phosphor particles are provided in the form of spherical polycrystalline secondary particles consisting of a multiplicity of primary particles, including a garnet phase having the compositional formula: (A1-xBx)3C5O12 wherein A is Y, Gd, and/or Lu, B is Ce, Nd, and/or Tb, C is Al and/or Ga, and 0.002?x?0.2, the secondary particles having an average particle size of 5-50 ?m.

Abstract: An outdoor luminaire comprising a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a phosphor layer disposed forward of the LED chip in its emission direction is provided. The phosphor layer comprises a phosphor of the formula: Lu3Al5O12:Ce3+ which is activated with up to 1 mol % of Ce relative to Lu, the phosphor being dispersed in a resin. In scotopic and mesopic vision conditions, the luminaire produces illumination affording brighter lighting, higher visual perception and brightness over a broader area.

Abstract: This lighting apparatus is provided with a blue LED s chip having a maximum peak at a wavelength of 420-480 nm and a fluorescent material-containing resin layer disposed on the front of the blue LED chip in the light emission direction. The fluorescent material-containing resin layer is obtained by mixing and dispersing a LuAg fluorescent material, which is represented by the formula Lu3Al5O12:Ce3+ and in which the Ce activation rate is 2 mol. % or lower relative to Lu, and a double fluoride fluorescent material represented by the formula A2(B1?xMnx)F6 (in the formula, A is at least one type of element selected from among the group consisting of Li, Na, K and Cs, B is at least one type of element selected from among the group consisting of Si, Ti, Nb, Ge and Sn, and x is an integer that falls within the range 0.001?x?0.1) in a resin.

Abstract: A phosphor-containing resin molded body and a wavelength conversion member, in each of which one or more kinds of spherical phosphors represented by (AxByCz)3C5O12 (wherein A represents one or more rare earth elements selected from among Y, Gd and Lu; B represents one or more rare earth elements selected from among Ce, Nd and Tb; C represents Al and/or Ga; and x, y and z respectively represent positive numbers satisfying 0.002?y?0.2, 0<z?2/3 and x+y+z=1) and having an average circularity of 0.3 or less are dispersed in an amount of 0.1-20% by mass; a light emitting device which is provided with the wavelength conversion member; and a resin pellet for phosphor-containing resin molded bodies.

Abstract: A phosphor-containing resin molded body and a wavelength conversion member, in each of which one or more kinds of spherical phosphors represented by (AxByCz)3C5O12 (wherein A represents one or more rare earth elements selected from among Y, Gd and Lu; B represents one or more rare earth elements selected from among Ce, Nd and Tb; C represents Al and/or Ga; and x, y and z respectively represent positive numbers satisfying 0.002?y?0.2, 0<z?2/3 and x+y+z=1) and having an average circularity of 0.3 or less are dispersed in an amount of 0.1-20% by mass; a light emitting device which is provided with the wavelength conversion member; and a resin pellet for phosphor-containing resin molded bodies.

Abstract: A turn signal for a vehicle has a blue LED as a light source, and an outer cover irradiated by the blue light. The outer cover includes a molded body of a polymeric material including phosphors dispersed therein that absorb blue light and emit light. By means of the present invention, it is possible to provide a turn signal for vehicles which has improved visibility and which imparts excellent visibility and sufficient luminous intensity over a wide angle. Further, because the entire outer cover surface-emits light, uniformity of luminous intensity is ensured without subjecting the outer cover to light scattering treatment, enabling as a result preventing glare caused by light scattering treatment, making this turn signal safe without being unpleasant for pedestrians and drivers of nearby vehicles. Furthermore, because no complex optical design is necessary, this turn signal saves space and can be arranged in a vehicle.

Abstract: A wavelength conversion member including a light emitting member being a molding of a mixture containing a transparent or translucent polymer material and a phosphor, and a reflection layer laminated on part of a surface of the light emitting member. In the wavelength conversion member which converts light from a light source by the phosphor and radiates the converted light in a desired direction, light emitted from the phosphor in the wavelength conversion member which is emitted in other directions than desired radiating direction can be efficiently utilized without loss.

Abstract: Phosphor particles of generally spherical shape have an average particle diameter of 5-50 ?m and an average roundness of up to 0.3. The phosphor includes a garnet phase having formula: (A1-xBx)3C5O12 wherein A is Y, Gd, or Lu, B is Ce, Nd, or Tb, C is Al or Ga, and 0.002?x?0.2.

Abstract: A red lamp is provided comprising a blue LED array and a red emissive member. The red emissive member is made of a resin having dispersed therein a phosphor capable of absorbing blue light and emitting red light, the phosphor being selected from among silicate, SiAlON, silicon nitride, sulfide, and garnet structure phosphors. The red lamp offers high efficiency, high light intensity, and improved visibility both in front and lateral directions and is thus suited for use in vehicle lighting fixtures such as red rear position lamps and red stop lamps.

Abstract: An outdoor luminaire comprising a blue LED chip having a maximum peak at a wavelength of 420-480 nm and a phosphor layer disposed forward of the LED chip in its emission direction is provided. The phosphor layer comprises a phosphor of the formula: Lu3Al5O12:Ce3+ which is activated with up to 1 mol % of Ce relative to Lu, the phosphor being dispersed in a resin. In scotopic and mesopic vision conditions, the luminaire produces illumination affording brighter lighting, higher visual perception and brightness over a broader area.

Abstract: A light-emitting device is provided comprising an excitation light source capable of emitting laser light and a phosphor adapted to convert the wavelength of the laser light and to generate light of converted wavelength. The phosphor is polycrystalline secondary particles each consisting of a plurality of primary particles and containing therein pores with a diameter of 0.2-25 ?m. The device produces light of quality in that the speckle noise that gives a glare or strange sense to eyesight when the light is illuminated to a rough surface is reduced.

Abstract: Phosphor particles are provided in the form of spherical polycrystalline secondary particles consisting of a multiplicity of primary particles, including a garnet phase having the composition: (AxByCz)3C5O12 wherein A is Y, Gd, and/or Lu, B is Ce, Nd, and/or Tb, C is Al and/or Ga, and x, y and z are in the range: 0.002<y?0.2, 0<z?2/3, and x+y+z=1. The phosphor particles are prepared by granulating powder oxides containing one or more of the elements A, B, and C, melting the granules in a plasma and solidifying outside the plasma, and heat treating the resulting particles in a non-oxidizing atmosphere at a temperature of higher than 800° C. to 1,700° C.