Fujikura Limited

National Institute for Materials Science

Fujikara Ltd.

Masakazu Ohashi

Masanori Ito

Naoki Kimura

Ken-ichi Uruga

Shunichirou Hirafune

Naoto Hirosaki

Hiroshi Matsui

Ken Sakuma

Kentaro Ichii

Koji Omichi

Takashi Shinmoto

Ryuji Suzuki

Yoshihiro Terada

Daiichiro Tanaka

Masatake Hasegawa

Jun Suzuki

Koji Azegami

Hirotaka Sawada

Takashi Edo

Kyosuke Takemoto

Kouiti Iinuma

Zhen Guo

Nianfang Wan

Yuki Morimatsu

A control system for a direct alcohol fuel cell, comprising: a fuel tank; a fuel cell stack; a pump feeding the fuel in the fuel tank to the fuel cell stack; a switching mechanism connecting the pump selectively with the fuel and air in the fuel tank; and a control unit switching the switching mechanism to connect the pump with the air when stopping power generation of the fuel cell stack. When the generation of the fuel cell stack is stopped, feeding of the fuel to the fuel cell stack is stopped and the air is supplied to the fuel cell stack thereby pushing out the remaining fuel.

Control system for direct alcohol fuel cell

An incandescent lamp color light emitting diode lamp comprises a semiconductor blue light emitting diode chip having a center emission wavelength in a range of from 400 nm to 480 nm and a phosphor that absorbs light emitted from the diode chip to emit light having a different wavelength than the light emitted from the diode chip. The phosphor is represented by a general formula of M(Si, Al)(O, N):Eu. The main phase is an &#x3b1;-SiAlON phosphor having an &#x3b1; SiAlON structure, wherein M is at least one element of Ca, Y, Mg, Li, Sc, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Sr and p is from 0.75 to 1.0; and q is between 0.02 and 0.09. The diode lamp emits light having an emission color produced by a mixture of the light emitted from the semiconductor blue light emitting and the light emitted from the &#x3b1;-SiAlON. The chromaticity range thereof falls within the range defined by chromaticity coordinates (x, y) of (0.4775, 0.4283), (0.4594, 0.3971), (0.4348, 0.4185), and (0.4214, 0.3887) on the XYZ chromaticity diagram.

Phosphor and an incandescent lamp color light emitting diode lamp using the same

A porcelain enamel substrate () mounts a light emitting element in which a porcelain enamel layer () is coated onto a surface of a core metal (), and a reflective cup portion () that has a flat bottom surface and a sloping portion that surrounds this bottom surface is provided on a light emitting element mounting surface, and an electrode () for energizing a light emitting element () is provided on the light emitting element mounting surface, and the thickness of the electrode () within the reflective cup portion () is within a range of 5 &#x3bc;m to 100 &#x3bc;m.

Porcelain enamel substrate for mounting light emitting device and method of manufacturing the same, light emitting device module, illumination device, display unit and traffic signal

A manufacturing method of an optical communication module for manufacturing the optical communication module, including the sequentially performed steps of: (1) mounting a light-emitting element and a light-receiving element on a side surface of a sub-mount substrate and mounting the sub-mount substrate on a printed circuit board such that the light-emitting and -receiving directions of the light-emitting element and light-receiving element are parallel to the printed circuit board; (2) aligning an optical waveguide; and (3) dropping resin solution on an area of the sub-mount substrate including an optical waveguide end and the light-emitting element or the light-receiving element, and curing the resin solution. According to the present invention, it is possible to provide an optical communication module which can be made thin, small and cheap.

Optical communication module, manufacturing method therefor, and optical transceiver

A light-emitting element mounting substrate () in which a surface of a core metal () is coated with an enamel layer (), and a reflective concave portion () for mounting a light-emitting element is provided, wherein a groove () is provided around the reflective concave portion.

Light-emitting element mounting substrate, light source, lighting device, display device, traffic signal, and method of manufacturing light-emitting element mounting substrate

A light emitting element mounting substrate that enables a high quality light emitting element package to be readily manufactured with minimal variations in the chromaticity when manufacturing a white LED, a light emitting element package that employs the substrate, and a display device and illumination device that employs this package, are provided. In the light emitting element mounting substrate, at least a light emitting element mounting portion of a surface of a core metal is coated with a fluorescent enamel layer that consists of a fluorescent material-containing glass. In the light emitting element package, a light emitting element is mounted on the light emitting element mounting substrate, and the light emitting element is sealed with a transparent sealing resin.

Light-emitting element mounting substrate, light-emitting element package, display device, and illumination device

The present invention provides a light-emitting element mounting substrate which includes: a core metal provided with a reflective cup which reflects light emitted from a mounted light-emitting element in a prescribed direction; and an enamel layer having a thickness within a range of 50 &#x3bc;m to 200 &#x3bc;m, and provided on a surface of the core metal. The present invention also provides a light-emitting element module in which a light-emitting element is provided on this light-emitting element mounting substrate, and in which the light-emitting element is sealed with a transparent sealing resin.

Light-emitting element mounting substrate and manufacturing method thereof, light-emitting element module and manufacturing method thereof, display device, lighting device, and traffic light

In accordance with the present invention, a light-emitting element mounting board is provided including an enamel layer which covers the surface of a core metal, wherein reflective cup portions for mounting light-emitting elements are provided on one face of the board, and wherein a heat radiating part is formed by at least partially removing the enamel layer on the other face of the board, and exposing the core metal. Further, a light-emitting element module including light-emitting elements mounted thereon, a lighting device including the light-emitting element, a display device, and traffic signal equipment are provided.

Light-emitting element mounting board, light-emitting element module, lighting device, display device, and traffic signal equipment

A porcelain enamel substrate mounts a light emitting device in which a porcelain enamel layer is coated onto a surface of a core metal, and a reflective cup portion that has a flat bottom surface and a sloping portion that surrounds this bottom surface is provided on a light emitting device mounting surface, and an electrode for energizing a light emitting device is provided on the light emitting device mounting surface, and the thickness of the electrode within the reflective cup portion is within a range of 5 &#x3bc;m to 100 &#x3bc;m.

A substrate for mounting a light-emitting element that has excellent efficiency in extracting light from a light-emitting element and can be manufactured at a low cost. The substrate for mounting a light-emitting elementhas a metal base materialin which a reflective cup portionfor reflecting a light emitted from a light-emitting elementtoward a predetermined direction is formed, and an enamel layerthat covers the surface of this metal base material, with the thickness of the enamel layerbeing within a range of 30 &#x3bc;m to 100 &#x3bc;m.

Substrate for mounting light-emitting element and light-emitting element module

A flame-retardant resin composition, which has a high flame retardancy equivalent to that of PVCs and can be separated from PVCs by a difference in specific gravity, is obtained by adding not less than 5 parts by weight and less than 50 parts by weight of a hydrated inorganic compound and not less than 1 part by weight and not more than 55 parts by weight of an auxiliary flame retardant having an action of forming a char-like thermally insulating layer on combustion and/or an action of foaming at high temperature thereby to entrap water vapor in a polyolefine resin so that the resulting flame-retardant resin composition has a specific gravity of 1.14 or less and an oxygen index of 24 or more.

Growing community of inventors

Sakura, Japan

Masakazu Ohashi