Toyoda Gosei Co., Ltd.

Other

Kuniyoshi Kondo

Hiroshi Ito

Tatsuya Yamashita

Manabu Kagami

Yukitoshi Inui

Akari Kawasaki

Junji Koizumi

Satoru Ono

Arimitsu Usuki

Hiromitsu Tanaka

Shin Sato

Makoto Sato

Michiyoshi Matsumoto

Yoshihiro Yamami

Setsuo Morizane

Tetsuya Suzuki

Yuji Takahashi

Takashi Ishikawa

Koichi Ota

Mamoru Kato

Itsuo Kamiya

Shingo Shimojima

Naoki Yoshimura

Yasuhiro Nishimura

Hisao Kato

Hirokazu Shimizu

Keiji Takenaka

Tsuyoshi Kato

Eiichi Okazaki

A transparent vessel is filled with a mixture solution containing a first photo-curable resin of a low refractive index and a second photo-curable resin of a high refractive index different in curing mechanism. When light at a wavelength capable of curing the first photo-curable resin but incapable of curing the second photo-curable resin is applied to the mixture solution through an optical fiber, the first photo-curable resin can be cured in a state in which the second photo-curable resin is enclosed in the cured first photo-curable resin. Because the refractive index increases according to curing, a self-condensing phenomenon can be generated so that an optical path portion is formed. The optical path portion emits leakage light to its surroundings to thereby form an outer circumferential portion. Then, all uncured resins in the mixture solution are cured. The outer circumferential portion containing a high percentage of the cured first photo-curable resin serves as a clad because the refractive index of the outer circumferential portion is lower than that of the optical path portion.

Material composition for producing optical waveguide and method for producing optical waveguide

A novel configuration of a light-emitting apparatus that can emit white light, in which a primary light source composed of a group III nitride compound semiconductor is used in combination with a secondary light source including a fluorescent material which emits light of a green luminescent color when the fluorescent material is excited by light emitted from the primary light source. A tertiary light source for emitting red light may be further used in combination with the primary and secondary light sources.

Light-emitting apparatus

A liner for a high pressure gas container includes a resin composition containing a polyphenylene sulfide resin and an olefin based resin. The resin composition has a methane gas permeability coefficient of 1.7&#xd7;10mol&#xb7;m/m&#xb7;s&#xb7;Pa or smaller at 40&#xb0; C., and tensile elongation of 50% or greater after fracture at 23&#xb0; C. A high pressure gas container having such a liner is also provided.

Liner for high pressure gas container and high pressure gas container

Transparent parallel planar plates which are members for retaining an optical waveguide are provided erectly in an optical path of light in a transparent vessel in advance. An optical fiber is fixed into the transparent vessel while the optical fiber penetrates the transparent vessel, and an optical sensor is also disposed adjustably. Next, a first photo-curable resin solution is injected into the transparent vessel, and light with a predetermined wavelength for curing is emitted from the optical fiber so that the optical waveguide is self-formed by polymerization reaction. Because the parallel planar plates are transparent, the optical waveguide is formed so as to be extended again from the emission ports of the parallel planar plates. Finally, the optical waveguide is formed so as to reach a bottom surface of the transparent vessel. The optical waveguide has a structure in which the optical waveguide is firmly supported at four points in a forward end surface of the optical fiber, the parallel planar plates and the bottom surface of the transparent vessel. Accordingly, a firm optical waveguide device is formed.

Method of manufacturing optical waveguide device

Interference filters which are optical components are erected in advance on optical paths in a transparent container, and the transparent container is filled with a photo-curable resin solution. Further, a jig is prepared for manufacturing an optical waveguide device. The jig includes a housing, and holes. On this occasion, positions of the holes are set such that light input through the hole reaches the holes via the interference filters. Optical fibers are fitted into the holes of the housing and the housing is mounted on the transparent container. Next, light at a predetermined wavelength is guided into the optical fibers so that optical waveguides are formed in the photo-curable resin solution. Next, the photo-curable resin solution is exchanged for a low-refractive-index photo-curable resin solution and then the low-refractive-index photo-curable resin solution is solidified wholly by ultraviolet light. Finally, for example, an optical fiber, a light-receiving element, etc. are provided.

Optical waveguide device manufacturing jig, method of manufacturing optical waveguide device by use of the same jig, and the same optical waveguide device

Into a mixture solutionof a high-refractive-index photo-curable resin A and a low-refractive-index photo-curable resin B, light capable of curing only the resin A is led through an optical fiberso that a cured resinof the resin A having a diameter substantially equal to the diameter of a core portion of the optical fiber is formed so as to extend from a tip of the optical fiber. Then, the residual mixture solutionis cured. In this manner, a module having the previously cured high-refractive-index resinas an optical waveguide can be formed easily. On this occasion, the mixed state of the mixture solutioncan be kept good enough to facilitate the formation of the high-refractive-index resinwhen the solubility parameter &#x3b4;of the high-refractive-index photo-curable resin A and the solubility parameter &#x3b4;and volume fraction &#x3a6;of the low-refractive-index photo-curable resin B satisfy the following expression (4).|&#x3b4;&#x2212;&#x3b4;|&#x3c;&#x2212;7.5&#x3a6;+6.0&#x2003;&#x2003;(4)

Self-formable optical waveguide material composition

An optical fiber, a mixture solution of the photosetting resins polymerizing in two different polymerization types, and a transparent container are prepared. The photosetting resins are not copolymerized, and have different activation wavelengths of the photopolymerization initiators for hardening. Employing a combination in which the activation wavelength of a photopolymerization initiator for a photosetting resin with higher refractive index after hardening is longer than the activation wavelength of a photopolymerization initiator for a photosetting resin with lower refractive index after hardening, a core portion can be only formed by hardening the photosetting resin with higher refractive index due to a difference between two wavelengths. Thereafter, a clad portion can be formed by hardening two kinds of photosetting resins, whereby an optical transmission device can be manufactured.

Fuel system part

A resin molding having welding properties, flexibility, and shock impact resistance in a balanced manner. The resin molding has a welded seam, consisting of a resin composition, wherein the resin composition comprises (a) a polyphenylene sulfide resin and (b) an olefin based resin: wherein an amount of the (a) polyphenylene sulfide resin and the (b) olefin based resin is 80 weight % or more of the entire resin composition, and the content of the (b) olefin based resin is 10 to 100 parts by weight relevant to 100 parts by weight of the (a) polyphenylene sulfide resin, and wherein the tensile elongation at break is 20% or more.

Resin molding

Self-doped conductive polymer, monomer for synthesizing self-doped conductive polymer, and processes of producing the same

A composite type conductive polymer having a phenylene vinylene backbone with a condensed hydrocarbon ring system introduced into the backbone to form a bend in a linear structure of the phenylene vinylene backbone.

Composite type conductive polymer and process of producing aromatic compound

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Nishikasugai-gun, Japan

Kuniyoshi Kondo