Abstract: A method for producing an olefinic thermoplastic elastomer comprising mixing 100 parts by weight of an olefin copolymer rubber (A) obtained by polymerizing ethylene, an ?-olefin having 3 to 20 carbon atoms and a non-conjugated polyene, and based on 100 parts by weight of the olefin copolymer rubber (A), 11 to 50 parts by weight of a volatile organic solvent (B) and 5 to 150 parts by weight of an olefin resin (C), and removing from the mixture the volatile organic solvent (B) while kneading in an extruder.

Abstract: A method for producing an olefinic thermoplastic elastomer comprising the steps of kneading an olefin copolymer rubber (A) obtained by polymerizing ethylene, an ?-olefin having 3 to 20 carbon atoms and a non-conjugated polyene, a volatile organic solvent (B) and, an olefin resin (C) in an extruder, removing the volatile organic solvent (B) while kneading, then adding a crosslinking agent (E) and further removing the volatile organic solvent (B) while kneading in the extruder to obtain the olefinic thermoplastic elastomer.

Abstract: A method for producing an olefinic thermoplastic elastomer comprising the steps of kneading an olefin copolymer rubber (A) obtained by polymerizing ethylene, an ?-olefin having 3 to 20 carbon atoms and a non-conjugated polyene, a volatile organic solvent (B) and, an olefin resin (C) in an extruder, removing the volatile organic solvent (B) while kneading, then adding a crosslinking agent (E) and further removing the volatile organic solvent (B) while kneading in the extruder to obtain the olefinic thermoplastic elastomer.

Abstract: A method for producing an olefinic thermoplastic elastomer comprising mixing 100 parts by weight of an olefin copolymer rubber (A) obtained by polymerizing ethylene, an ?-olefin having 3 to 20 carbon atoms and a non-conjugated polyene, and based on 100 parts by weight of the olefin copolymer rubber (A), 11 to 50 parts by weight of a volatile organic solvent (B) and 5 to 150 parts by weight of an olefin resin (C), and removing from the mixture the volatile organic solvent (B) while kneading in an extruder.

Abstract: A thermoplastic elastomer composition for foam injection molding is provided that includes component (A), component (B), component (C), and component (D) below, relative to 100 parts by weight of component (A), component (B) having a content of 5 to 150 parts by weight, component (C) having a content of 5 to 300 parts by weight, and component (D) having a content of 5 to 150 parts by weight. (A): A hydrogenated product of a block copolymer comprising a block composed of an aromatic vinyl compound-based monomer unit and a block composed of a conjugated diene compound-based monomer unit, the hydrogenated product having a weight-average molecular weight of not more than 200,000, (B): a propylene resin, (C): a mineral oil, and (D): an ethylene-propylene copolymer rubber having a Mooney viscosity (ML1+4, 100° C.) of 20 to 200, an ethylene-based monomer unit having a content of 40 to 80 wt % (relative to 100 wt % of the copolymer rubber).

Abstract: A process for producing a thermoplastic elastomer composition foam body is provided that includes, in sequence, a step of injecting by an injection molding machine into a cavity of a mold for injection molding a foaming agent and a thermoplastic elastomer composition comprising component (A), component (B), and component (C) below, component (B) having a content of 5 to 150 parts by weight relative to 100 parts by weight of component (A) and component (C) having a content of 5 to 300 parts by weight relative to 100 parts by weight of component (A), a step of holding for not less than 4 seconds after completion of the injection, and a step of enlarging the volume of the cavity by moving a wall face of the cavity to a predetermined position. (A): A hydrogenated product of a block copolymer comprising a block composed of an aromatic vinyl compound-based monomer unit and a block composed of a conjugated diene compound-based monomer unit, (B): a propylene resin, and (C): a mineral oil.

Abstract: A semiconductor laser device including a semiconductor laser, a collimate lens placed opposite a light exit facet of the semiconductor laser, and a base on which the semiconductor laser is mounted, from which sleeve portions projects in a direction in which laser light is emitted, the sleeve portions being formed at respective ends of the base to hold the collimate lens. A notch is formed in each of opposite surfaces of the sleeve portions.

Abstract: A core of an excitation light source is spliced with a first optical fiber to which no laser activation material is added, so that the light output from the first optical fiber is injected to a second optical fiber to a core of which the laser activation material is added.

Abstract: An optical module apparatus comprises a first optical element, a first member which holds the first optical element, a second optical element placed near the first optical element, and a second member which holds the second optical element. A plurality of wedges are arranged at a plurality of positions between the first member and the second member thereby to hold the relative positions of the first optical element and the second optical element.

Abstract: An optical-fiber connector comprises a first optical fiber, a first ferrule which has a cutout portion in at least a periphery of one end face thereof and holds the first optical fiber such that a front end of the first optical fiber becomes the same face as the one end face, a second optical fiber, a second ferrule which has a cutout portion in at least a periphery of one end face thereof and holds the second optical fiber such that a front end of the second optical fiber becomes the same face as the one end face, and an adhesive which connects the one end face of the first ferrule with the one end face of the second ferrule.

Abstract: A semiconductor laser module comprising, a semiconductor laser element, an electronic cooling element configured to allow heat from the semiconductor laser element to be transmitted thereto, a heat sink configured to allow the heat which is transmitted to the electronic cooling element to be released, an optical system configured to conduct a laser beam which is emitted from the semiconductor laser element to an optical fiber cable, and a heat resistance section configured to transmit the heat of the optical system to the electronic cooling element, having a heat resistance greater than a heat resistance when the heat of the semiconductor laser element is transmitted to the electronic cooling element.

Abstract: A semiconductor device is provided with a base, a semiconductor laser configured to be supported by the base, and a collimate lens configured to have a portion opposed to a light-outgoing region of the semiconductor laser and a portion to be adhered to the base. A notch a notch is formed at the base, and held between a portion to which the collimate lens is adhered and a portion which supports the semiconductor laser, of the base.

Abstract: An optical module apparatus comprises a first optical element, a first member which holds the first optical element, a second optical element placed near the first optical element, and a second member which holds the second optical element. A plurality of wedges are arranged at a plurality of positions between the first member and the second member thereby to hold the relative positions of the first optical element and the second optical element.

Abstract: A core of an excitation light source is spliced with a first optical fiber to which no laser activation material is added, so that the light output from the first optical fiber is injected to a second optical fiber to a core of which the laser activation material is added.

Abstract: Even if there is a temperature variation, a positional discrepancy at a colliding surface of an active surface of a semiconductor laser and an optical waveguide is suppressed, resulting in realization of a semiconductor light emitting element coupled with optical fiber of stable operation. In order to realize the above object, a semiconductor light emitting element coupled with optical fiber comprises a substrate, an optical waveguide disposed on the substrate and including a core and a cladding layer covering the core, a semiconductor light emitting element disposed on the substrate and comprising an output end-surface facing one end of the core of the optical waveguide, and an optical fiber comprising a core an end of which faces the other end of the core of the optical waveguide, wherein the cladding layer sandwiches both surfaces of the semiconductor light emitting element.

Abstract: Even if there is a temperature variation, a positional discrepancy at a colliding surface of an active surface of a semiconductor laser and an optical waveguide is suppressed, resulting in realization of a semiconductor light emitting element coupled with optical fiber of stable operation. In order to realize the above object, a semiconductor light emitting element coupled with optical fiber comprises a substrate, an optical waveguide disposed on the substrate and including a core and a cladding layer covering the core, a semiconductor light emitting element disposed on the substrate and comprising an output end-surface facing one end of the core of the optical waveguide, and an optical fiber comprising a core an end of which faces the other end of the core of the optical waveguide, wherein the cladding layer sandwiches both surfaces of the semiconductor light emitting element.

Abstract: An optical fiber, having a fiber cladding and a fiber core doped with laser active material, is embedded in an optical waveguide core having a refractive index almost equal to that of the optical fiber cladding, and pumping light is guided, in a side pumping manner, from the semiconductor laser via the light-guiding section. The guided pumping light is absorbed by the laser active material, as it propagates and moves around in the optical waveguide core in a fixed direction. Because the optical waveguide core is ring-shaped and enclosed by the optical waveguide cladding having a low refractive index, the rest of the guided pumping light propagates and moves around in the optical waveguide core again. Therefore, a laser active material in the optical fiber core can be pumped efficiently.

Abstract: To obtain an inexpensive, high-power optical fiber output semiconductor device, an edge emitting type semiconductor element, a tapered optical waveguide having a structure for accommodating expansion and contraction due to a change in temperature, and an optical fiber are prepared separately. One edge of the tapered optical waveguide is butt-joined to an output face of the edge emitting type semiconductor element. The other edge of the tapered optical waveguide is connected to the optical fiber.

Abstract: Even if there is a temperature variation, a positional discrepancy at a colliding surface of an active surface of a semiconductor laser and an optical waveguide is suppressed, resulting in realization of a semiconductor light emitting element coupled with optical fiber of stable operation. In order to realize the above object, a semiconductor light emitting element coupled with optical fiber comprises a substrate, an optical waveguide disposed on the substrate and including a core and a cladding layer covering the core, a semiconductor light emitting element disposed on the substrate and comprising an output end-surface facing one end of the core of the optical waveguide, and an optical fiber comprising a core an end of which faces the other end of the core of the optical waveguide, wherein the cladding layer sandwiches both surfaces of the semiconductor light emitting element.

Abstract: A three-dimensional image display apparatus of the invention can be easily operated by the operator while a three-dimensional image created by the apparatus is observed by him. A depth information maximum value acquisition circuit acquires depth information contained in a first image signal. A parallax control circuit controls the parallax amount of a second image signal on the basis of depth information contained in the first and second image signals such that an image corresponding to the second image signal can be three-dimensionally displayed in front of an image corresponding to the first image signal. A three-dimensional image synthesizer synthesizes the first and second image signals which has been controlled by the parallax control circuit, on the basis of the parallax amount of each image signal, such that images correspond to that the first and second image signals in the three-dimensional display space.