Nippon Electric Glass Co., Ltd.

Shunsuke Fujita

Tadahito Furuyama

Tamio Ando

Yoshio Umayahara

Masaru Iwao

Shotaro Fukumoto

Naoki Fujita

Takemi Kikutani

Akihiko Sakamoto

Takahiro Matano

Masaaki Kadomi

Shingo Nakane

Hiroyuki Shimizu

Yoshinori Yamazaki

Yuji Ishida

The purpose is to provide a wavelength conversion member, a method for producing the wavelength conversion member, and a light-emitting device, which are capable of reducing the temperature rise of the wavelength conversion member and thus reducing the decrease in luminescence intensity with time and deformation and discoloration of constituent materials. A wavelength conversion memberincludes thermally conductive particlesand phosphor particlesand the thermally conductive particlesinclude two types of thermally conductive particles different in average particle diameter from each other.

Wavelength conversion member, production method therefor, and light-emitting device

Provided are a wavelength conversion member, a light-emitting element, and a light-emitting device which have high heat dissipation capability and are capable of reducing the decrease in luminescence intensity caused by increased output of an excitation light source. A wavelength conversion memberincludes a matrixand an inorganic phosphorcontained in the matrixand has a relative density of 90% or more, a thermal conductivity of 10 W/m·K or more, and a quantum efficiency of 50% or more.

Wavelength conversion member, light-emitting element, and light-emitting device

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 particleinclude: inorganic particleshaving an average particle diameter of 1 &#x3bc;m or more; and a nanophosphorattached to surfaces of the inorganic particles

Nanophosphor-attached inorganic particles and wavelength conversion member

The purpose is to provide a wavelength conversion member, a method for manufacturing the wavelength conversion member, and a light-emitting device, which are capable of reducing the temperature rise of the wavelength conversion member and thus reducing the decrease in luminescence intensity with time and deformation and discoloration of constituent materials. A wavelength conversion memberincludes a matrixand phosphor particlesdispersed in the matrix, wherein the matrixis formed of a porous oxide bodyhaving an average pore diameter of 50 &#x3bc;m or less.

Wavelength conversion member, method for manufacturing same, and light emission device

Provided is a wavelength conversion member that can increase the light extraction efficiency to improve the luminous efficiency. A wavelength conversion memberincludes: a phosphor layercontaining a glass matrix and inorganic phosphor powder dispersed in the glass matrix; a glass layerdisposed on a surface of the phosphor layerand having a refractive index equal to or smaller than a refractive index of the inorganic phosphor powder; and a microscopically uneven layerdisposed on a surface of the glass layerand having a refractive index equal to or smaller than the refractive index of the glass layer

Wavelength conversion member, light-emitting device, and method for manufacturing wavelength conversion member

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 () which has a first principal surface () and a second principal surface () located on an opposite side to the first principal surface () and is capable of being excited by the entry of excitation light to emit fluorescence; a first glass layer () provided on the first principal surface () of the phosphor layer (); and a second glass layer () provided on the second principal surface () of the phosphor layer ().

Projector-use luminescent wheel and manufacturing method therefor, and projector-use light emitting device

Provided is a resin composition for three-dimensional modeling to which inorganic filler particles of a sufficient amount can be added, without damaging transparency. The resin composition for three-dimensional modeling includes a curable resin and inorganic filler particles, in which the inorganic filler particles are light-transmitting particles of which a difference in refractive index nd to the curable resin after curing is &#xb1;0.02 or less, and a difference in Abbe number vd to the curable resin after curing is &#xb1;10 or less.

Resin composition for three-dimensional modeling, method for manufacturing three-dimensional modeled object, and inorganic filler particles

Provided are a wavelength conversion member and a wavelength conversion element which are 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 a light emitting apparatus using the wavelength conversion member or the wavelength conversion element. A wavelength conversion member contains, in % by mass, 70 to 99.9% inorganic phosphor particles and 0.1 to 30% easily sinterable ceramic particles, wherein the easily sinterable ceramic particles are interposed between the inorganic phosphor particles and the inorganic phosphor particles are bound together by the easily sinterable ceramic particles.

Wavelength conversion member, wavelength conversion element, and light emitting apparatus using those

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 () includes a laminate that includes: a phosphor layer (); and light-transmissive heat dissipation layers () formed on both surfaces of the phosphor layer () and having a higher thermal conductivity than the phosphor layer ().

Wavelength conversion member and light emitting device using same

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 (); an annular ceramic substrate () which includes a first principal surface provided with the phosphor layer () 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 (); and a reflective layer () provided on the second principal surface of the ceramic substrate ().

Fluorescent wheel for projectors and light emitting device for projectors

Disclosed is a phosphor composite material which can be fired at low temperatures and enables to obtain a phosphor composite member which is excellent in weather resistance and reduced in deterioration after long use. Also disclosed is a phosphor composite member obtained by firing such a phosphor composite material. Specifically disclosed is a phosphor composite material composed of a glass powder and a phosphor powder, which is characterized in that the glass powder is composed of SnO&#x2014;PO&#x2014;BOglass.

Illuminating device and phosphor composite material

To provide a wavelength conversion member having good surface accuracy and dimensional accuracy even when processed in various shapes, and a method for manufacturing the same. A method for manufacturing a wavelength conversion member, including the steps of: subjecting a preform made of a powder mixture containing a glass powder and an inorganic phosphor powder to heat treatment, thereby obtaining a sintered powder product; and re-press molding the sintered powder product with a die.

Growing community of inventors

Otsu, Japan

Shunsuke Fujita