Abstract: A power module includes a plurality of conductive wire groups and a sealing member. The plurality of conductive wire groups each include a first bonded portion and a second bonded portion. A maximum gap between intermediate portions of a pair of conductive wire groups adjacent to each other is larger than a first gap between the first bonded portions of the pair of conductive wire groups adjacent to each other. The maximum gap between the intermediate portions of the pair of conductive wire groups adjacent to each other is larger than a second gap between the second bonded portions of the pair of conductive wire groups adjacent to each other. Therefore, the power module is improved in reliability.

Abstract: [Problem to be Solved] Provided are an aqueous dispersion of a fluoroolefin and the like that do not corrode vessels and enable a copolymer to be given at a high conversion ratio and high productivity from the fluoroolefin as a raw material monomer. [Solution] An aqueous dispersion containing: a fluoroolefin (a) represented by the following general formula (1); a surfactant (c) represented by the following general formula (2); and a dispersion medium containing water, wherein the aqueous dispersion has a cumulant diameter of 250 to 2,000 nm, and the aqueous dispersion has a pH of 2.0 to 7.

Abstract: A power module includes a plurality of conductive wire groups and a sealing member. The plurality of conductive wire groups each include a first bonded portion and a second bonded portion. A maximum gap between intermediate portions of a pair of conductive wire groups adjacent to each other is larger than a first gap between the first bonded portions of the pair of conductive wire groups adjacent to each other. The maximum gap between the intermediate portions of the pair of conductive wire groups adjacent to each other is larger than a second gap between the second bonded portions of the pair of conductive wire groups adjacent to each other. Therefore, the power module is improved in reliability.

Abstract: The optical waveguide includes: a lower clad layer, a core layer, an upper clad layer, a substrate, and a mirror, the lower clad layer, the core layer, and the upper clad layer being sequentially laminated to the substrate, the mirror being formed on the core layer, in which the substrate has an opening, the maximum diameter of the opening is larger than that of luminous flux reflected by the mirror, and the maximum diameter of the opening is 240 ?m or less. The optical waveguide is capable of transmitting a light signal regardless of the type of the substrate, suppressing the spread of a light signal reflected from the mirror, and transmitting a light signal with a low optical transmission loss.

Abstract: Provided is a substrate with a lens, including: a substrate; a columnar member provided on one surface side of the substrate; and a lens member provided on the columnar member. While arbitrarily selecting the height of the lens, the lens is formed in a uniform and desired shape. Thus, the distance between the lens and another optical member can be reduced and the pitch of the lens can be reduced.

Abstract: The optical waveguide includes: a lower clad layer, a core layer, an upper clad layer, a substrate, and a mirror, the lower clad layer, the core layer, and the upper clad layer being sequentially laminated to the substrate, the mirror being formed on the core layer, in which the substrate has an opening, the maximum diameter of the opening is larger than that of luminous flux reflected by the mirror, and the maximum diameter of the opening is 240 ?m or less. The optical waveguide is capable of transmitting a light signal regardless of the type of the substrate, suppressing the spread of a light signal reflected from the mirror, and transmitting a light signal with a low optical transmission loss.

Abstract: The present invention provides a resin composition for an optical waveguide and a resin film for optical waveguides, the composition and the film being soluble in an aqueous alkaline solution, being patternable as required by alkali development, and exhibiting a lower optical propagation loss at a wavelength of from 830 to 850 nm, and an optical waveguide using the composition or the film. The resin composition for an optical waveguide according to the present invention includes (A) a polymer, (B) a polymerizable compound, and (C) a polymerization initiator. A refractive index A of the film after irradiation with UV light and heat-curing and a refractive index B of the film after irradiation with UV light, immersion in an alkali developer, and then heat-curing satisfy the relationship of A>B.

Abstract: The optical waveguide with mirror 10 of the present invention includes: a lower clad layer 22; a core pattern 24 formed above the lower clad layer 22; a mirror 30 formed on the inclined surface 31 of the core pattern 24; an upper clad layer 26 covering the part other than the mirror 30 on the core pattern 24; and an opening 26a with an approximate pillar shape, the opening being formed on the upper clad layer 26, wherein the mirror 30 is formed in the opening 26a.

Abstract: The present invention provides a method for manufacturing an optical member and an optical waveguide having a low optical loss. The provided method is capable of highly accurately controlling the positional configuration of refractive index distribution in the surface layer, including its vicinity, and the center portion of the core pattern in a transparent member. The method for manufacturing the optical member by the present invention has a Process A, in which the transparent member is exposed to a solution and thereby the refractive index of the surface layer of the transparent member exposed to the solution is substantially lower than that of the center portion of the transparent member not exposed to the solution. The substantial lowering of the refractive index of the surface layer is achieved by making the refractive index regulating agent exert its function by being included in the surface layer of the transparent member.

Abstract: [Problem] To provide a photosensitive resin composition for forming a member having a curved shape, which is soluble in an alkaline aqueous solution, and with which a pattern can be formed comparatively freely, wherein a lens member formed by using the said composition is excellent in heat resistance, formability of a curved shape, and transparency. [Solution] The said photosensitive resin composition for forming a member having a curved shape comprises (A) a polymer, (B) a polymerizable compound having a group which thermally reacts with the said polymer, and (C) a polymerization initiator.

Abstract: Provided is a substrate with a lens, including: a substrate; a columnar member provided on one surface side of the substrate; and a lens member provided on the columnar member. While arbitrarily selecting the height of the lens, the lens is formed in a uniform and desired shape. Thus, the distance between the lens and another optical member can be reduced and the pitch of the lens can be reduced.

Abstract: An optical fiber connector in which: an optical fiber guide member includes a fiber guide side substrate portion forming part of a substrate, a fiber guide pattern, and a lid member; and an optical waveguide includes an optical waveguide side substrate portion adjacent to the fiber guide side substrate portion, an optical waveguide side first lower clad layer, an optical signal transmission core pattern, and an optical waveguide side upper clad layer. The fiber guide pattern is formed of a plurality of guide members aligned parallel to one another at intervals. A space defined by every two adjacent guide members, the fiber guide side substrate portion, and a fiber guide side lid member portion forms a fiber guide groove. The fiber guide groove is present on an extension of the optical signal transmission core pattern in an optical path direction.

Abstract: The optical waveguide includes: a lower clad layer, a core layer, an upper clad layer, a substrate, and a mirror, the lower clad layer, the core layer, and the upper clad layer being sequentially laminated to the substrate, the mirror being formed on the core layer, in which the substrate has an opening, the maximum diameter of the opening is larger than that of luminous flux reflected by the mirror, and the maximum diameter of the opening is 240 ?m or less. The optical waveguide is capable of transmitting a light signal regardless of the type of the substrate, suppressing the spread of a light signal reflected from the mirror, and transmitting a light signal with a low optical transmission loss.

Abstract: The optical waveguide with mirror 10 of the present invention includes: a lower clad layer 22; a core pattern 24 formed above the lower clad layer 22; a mirror 30 formed on the inclined surface 31 of the core pattern 24; an upper clad layer 26 covering the part other than the mirror 30 on the core pattern 24; and an opening 26a with an approximate pillar shape, the opening being formed on the upper clad layer 26, wherein the mirror 30 is formed in the opening 26a.