Abstract: Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by mass, 30 to 75% SiO2, 1 to 30% B2O3, over 4 to 20% Al2O3, 0.1 to 10% Li2O, 0 to below 9% Na2O+K2O, and 0 to 10% MgO+CaO+SrO+BaO+ZnO.

Abstract: The glass contains a Ti component in a glass composition, in which a Ti3+ ion content is 80 ppm or less.

Abstract: Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by mass, 30 to 75% SiO2, 1 to 30% B2O3, over 4 to 20% Al2O3, 0.1 to 10% Li2O, 0 to below 9% Na2O+K2O, and 0 to 10% MgO+CaO+SrO+BaO+ZnO.

Abstract: Provided are nanophosphor-attached inorganic particles that can suppress the degradation of the nanophosphor when sealed in glass, and a wavelength conversion member using the nanophosphor-attached inorganic particles. The nanophosphor-attached inorganic particle 10 include: inorganic particles 1 having an average particle diameter of 1 ?m or more; and a nanophosphor 2 attached to surfaces of the inorganic particles 1.

Abstract: Provided are an inorganic fluorescent nanoparticle composite that can suppress the degradation of inorganic fluorescent nanoparticles when sealed in glass and a wavelength conversion member using the inorganic fluorescent nanoparticle composite. An inorganic fluorescent nanoparticle composite 1 is made up by including: an inorganic fluorescent nanoparticle 2; and an inorganic fine particle 3 deposited on a surface of the inorganic fluorescent nanoparticle 2.

Abstract: Provided is a glass that is used in a phosphor-containing wavelength conversion material and from which can be produced a wavelength conversion member less degraded in characteristics of a phosphor owing to firing during production of the wavelength conversion member and having excellent weather resistance. The glass is for use in a wavelength conversion material and contains, in terms of % by mass, 30 to 75% SiO2, 1 to 30% B2O3, over 4 to 20% Al2O3, 0.1 to 10% Li2O, 0 to below 9% Na2O+K2O, and 0 to 10% MgO+CaO+SrO+BaO+ZnO.

Abstract: Provided are nanophosphor-attached inorganic particles that can suppress the degradation of the nanophosphor when sealed in glass, and a wavelength conversion member using the nanophosphor-attached inorganic particles. The nanophosphor-attached inorganic particle 10 include: inorganic particles 1 having an average particle diameter of 1 ?m or more; and a nanophosphor 2 attached to surfaces of the inorganic particles 1.

Abstract: Provided are an inorganic fluorescent nanoparticle composite that can suppress the degradation of inorganic fluorescent nanoparticles when sealed in glass and a wavelength conversion member using the inorganic fluorescent nanoparticle composite. An inorganic fluorescent nanoparticle composite 1 is made up by including: an inorganic fluorescent nanoparticle 2; and an inorganic fine particle 3 deposited on a surface of the inorganic fluorescent nanoparticle 2.

Abstract: Provided is a luminescent wheel for a projector, which has a novel structure in which a phosphor layer is hard to break even if its thickness is reduced; a manufacturing method therefor; and a light emitting device for a projector. A luminescent wheel for a projector includes: a phosphor layer (11) which has a first principal surface (11a) and a second principal surface (11b) located on an opposite side to the first principal surface (11a) and is capable of being excited by the entry of excitation light to emit fluorescence; a first glass layer (12) provided on the first principal surface (11a) of the phosphor layer (11); and a second glass layer (13) provided on the second principal surface (11b) of the phosphor layer (11).

Abstract: Provided is a luminescent wheel for a projector, which has a novel structure in which a phosphor layer is hard to break even if its thickness is reduced; a manufacturing method therefor; and a light emitting device for a projector. A luminescent wheel for a projector includes: a phosphor layer (11) which has a first principal surface (11a) and a second principal surface (11b) located on an opposite side to the first principal surface (11a) and is capable of being excited by the entry of excitation light to emit fluorescence; a first glass layer (12) provided on the first principal surface (11a) of the phosphor layer (11); and a second glass layer (13) provided on the second principal surface (11b) of the phosphor layer (11).

Abstract: Provided is a luminescent wheel for a projector, which has a novel structure in which a phosphor layer is hard to break even if its thickness is reduced; a manufacturing method therefor; and a light emitting device for a projector. A luminescent wheel for a projector includes: a phosphor layer (11) which has a first principal surface (11a) and a second principal surface (11b) located on an opposite side to the first principal surface (11a) and is capable of being excited by the entry of excitation light to emit fluorescence; a first glass layer (12) provided on the first principal surface (11a) of the phosphor layer (11); and a second glass layer (13) provided on the second principal surface (11b) of the phosphor layer (11).

Abstract: Provided is a wavelength conversion member capable of reducing the decrease in luminescence intensity with time and the melting of a component material when irradiated with light of a high-power LED or LD and providing a light emitting device using the wavelength conversion member. The wavelength conversion member (11) includes a laminate that includes: a phosphor layer (1); and light-transmissive heat dissipation layers (2) formed on both surfaces of the phosphor layer (1) and having a higher thermal conductivity than the phosphor layer (1).

Abstract: Provided is a fluorescent wheel for a projector capable of suppressing the heating of the phosphor layer and a light emitting device for a projector using the same. The fluorescent wheel for a projector includes: a phosphor layer (12); an annular ceramic substrate (11) which includes a first principal surface provided with the phosphor layer (12) and a second principal surface located on an opposite side to the first principal surface and has a higher thermal conductivity than the phosphor layer (12); and a reflective layer (13) provided on the second principal surface of the ceramic substrate (11).

Abstract: Provided is a wavelength conversion member capable of reducing the decrease in luminescence intensity with time and the melting of a component material when irradiated with light of a high-power LED or LD and providing a light emitting device using the wavelength conversion member. The wavelength conversion member (11) includes a laminate that includes: a phosphor layer (1); and light-transmissive heat dissipation layers (2) formed on both surfaces of the phosphor layer (1) and having a higher thermal conductivity than the phosphor layer (1).

Abstract: Provided is a luminescent wheel for a projector, which has a novel structure in which a phosphor layer is hard to break even if its thickness is reduced; a manufacturing method therefor; and a light emitting device for a projector. A luminescent wheel for a projector includes: a phosphor layer (11) which has a first principal surface (11a) and a second principal surface (11b) located on an opposite side to the first principal surface (11a) and is capable of being excited by the entry of excitation light to emit fluorescence; a first glass layer (12) provided on the first principal surface (11a) of the phosphor layer (11); and a second glass layer (13) provided on the second principal surface (11b) of the phosphor layer (11).

Abstract: Provided is a fluorescent wheel for a projector capable of increasing the luminescence intensity and a light-emitting device for a projector using the same. The fluorescent wheel for a projector includes: an annular transparent substrate (11) including a first principal surface (11a) located on a side where excitation light (1) enters and a second principal surface (11b) located on a side where the excitation light (1) exits; a phosphor layer (12) provided on the second principal surface (11b) of the transparent substrate (11) and including an inorganic binder and a phosphor dispersed in the inorganic binder; and a filter layer (13) provided on the first principal surface (11a) of the transparent substrate (11) or between the second principal surface (11b) of the transparent substrate (11) and the phosphor layer (12) and configured to transmit the excitation light (1) and reflect fluorescence (2) emitted from the phosphor layer (12).

Abstract: Provided is a fluorescent wheel for a projector capable of suppressing the heating of the phosphor layer and a light emitting device for a projector using the same. The fluorescent wheel for a projector includes: a phosphor layer (12); an annular ceramic substrate (11) which includes a first principal surface provided with the phosphor layer (12) and a second principal surface located on an opposite side to the first principal surface and has a higher thermal conductivity than the phosphor layer (12); and a reflective layer (13) provided on the second principal surface of the ceramic substrate (11).