Toray Industries, Inc.

Sumitomo Electric Industries, Limited

Satoshi Matsuba

Masaki Ueno

Kazutaka Kusano

Tsukuru Mizuguchi

Shinji Sato

Hideki Kojima

Masaaki Umehara

Susumu Yoshimoto

Yasushi Sawamura

Hironobu Maeda

Hidekazu Kunieda

Kenji Hiramoto

Koki Mitsuno

A plastic optical fiber that has a multilayer structure that includes a core (X), a first cladding (Y), and a second cladding (Z), wherein the core is made of an organic polymer material having a water-absorbing ratio of not less than 0.001% and not more than 0.29% and a total light transmittance of not less than 80% and containing not less than 0.01% by weight and not more than 10% by weight of a plasticizer; a relationship between a refractive index of the core (X) and the refractive index of the first cladding (Y) is defined by inequality: X−Y>0.01, and a relationship between a refractive index of the first cladding (Y) and the refractive index of a second cladding (Z) is defined by inequality: Y−Z>0.05, wherein the plastic optical fiber has high humidity resistance and excellent bending resistance.

Plastic optical fiber, medical lighting device, medical sensor device, medical phototherapy device, and plastic optical fiber cord

A plastic optical fiber for a medical device lighting decreases the cost of a lens and simplify the design of a lighting apparatus, wherein the plastic optical fiber for a medical device includes a core composed of a (co)polymer containing methyl methacrylate as a main component and is characterized by including a cladding material composed of a copolymer having a fluorine weight composition ratio of 60 to 74%, and by having a theoretical numerical aperture, NA, of 0.48 to 0.65 and, thus, the plastic optical fiber has a high numerical aperture and also has excellent translucency and flexibility.

Plastic optical fiber for medical device lighting and medical device lighting using same

A plastic optical fiber is excellent in translucency, heat resistance, resistance to environment and the like, and has highly excellent flexibility. The plastic optical fiber contains a core and at least one layer of cladding, wherein the bending elastic modulus of the innermost layer of the cladding is 20 to 70 MPa, the glass transition temperature of the innermost layer of the cladding is 10&#xb0; C. or lower, and the storage elastic modulus of the innermost layer of the cladding at 30&#xb0; C. is 1&#xd7;10Pa to 4&#xd7;10Pa.

Plastic optical fiber and plastic optical fiber cord

A photosensitive conductive paste provides a coating film having good storage stability, is capable of maintaining high adhesion under relatively low temperature curing conditions, and is also capable of exhibiting high conductivity. The photosensitive conductive paste contains (A) conductive particles, (B) a photosensitie component, (C) a photopolymerization initiator and (D) an epoxy resin, wherein the epoxy resin (D) has an epoxy equivalent weight of 200-500 g/equivalent.

Photosensitive conductive paste

A photosensitive conductive paste includes an epoxy acrylate (A) including a urethane bond, a photopolymerization initiator (B), and a conductive filler (C), wherein an added amount of the conductive filler (C) is 70 to 95% by weight with respect to the total solids in the photosensitive conductive paste.

Photosensitive conductive paste and method of producing conductive pattern

A photosensitive conductive paste includes a dicarboxylic acid or an acid anhydride thereof (A); a compound (B) having an acid value of 40 to 200 mg KOH/g; an alicyclic compound (C); a photopolymerization initiator (D); and a conductive filler (E).

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Nagoya, Japan

Satoshi Matsuba