Abstract: An optical fiber cable includes: a core including an optical fiber; a wrapping tube wrapping the core; a jacket housing the core and the wrapping tube; a tension-resisting member of a Fiber Reinforced Plastic (FRP) embedded in the jacket; and a wire member that is flexible, includes fibers, and is embedded in the jacket. In a transverse cross-sectional view, the wire member is disposed inside a virtual circle that has a center at a center axis of the core and that passes through a center of the tension-resisting member. A circumferential dimension of the wire member is greater than a radial dimension of the wire member.

Abstract: A stereolithography device includes: a container that stores a photocurable resin before curing, the container having a bottom plate that is optically transparent; a holder configured to be immersed into the photocurable resin; a reaction light irradiation section configured to irradiate a reaction light that accelerates curing of the photocurable resin, wherein the reaction light passes through a boundary surface between the bottom plate and the photocurable resin; and an inhibition light irradiation section configured to irradiate an inhibition light that inhibits curing of the photocurable resin, wherein the inhibition light is totally reflected at the boundary surface.

Abstract: A ferrule for an optical connector includes: a ferrule main body that includes fiber holes that extend in a front-rear direction, that are disposed in a left-right direction, and into which optical fibers are inserted, a guide hole into which a guide pin is inserted, and a recessed portion recessed from a rear end surface of the ferrule main body toward a front side on which a connection end surface of the ferrule main body is disposed in the front-rear direction. A vertical direction is perpendicular to both the front-rear direction and the left-right direction. Rear end portions of the fiber holes open at a bottom surface of the recessed portion. The bottom surface includes a first inclined surface inclined toward the fiber holes in a direction toward the front side.

Abstract: An optical fiber cable includes: a core including optical fibers; a reinforcing wrap that surrounds the core; and a sheath that accommodates the core and the reinforcing wrap. The reinforcing wrap includes an overlapping portion. A first end portion of the reinforcing wrap overlaps a second end portion of the reinforcing wrap at a portion of the reinforcing wrap in a circumferential direction of the optical fiber cable in a cross-sectional view.

Abstract: A method of producing a structure that includes: a delivery fiber; a bridge fiber that is joined to one end face of the delivery fiber and that is larger in diameter than the delivery fiber; and a glass block that is joined to one end face of the bridge fiber, the method includes: forming, at a portion other than the one end face of the bridge fiber, a tapering section that includes, as part of a surface thereof, a sloping surface sloping at an angle of more than 0° and less than 90° to an optical axis of the bridge fiber; and fusion-splicing the delivery fiber and the tapering section of the bridge fiber using an optical fiber fusion splicer.

Abstract: A method of producing a structure that includes: a delivery fiber; a small glass tube that covers a section including one end face of the delivery fiber; and a glass block that is joined to the one end face of the delivery fiber and that is joined to one end face of the small glass tube, the method includes: forming, at a portion other than the one end face of the small glass tube, a tapering section that includes, as part of a surface thereof, a sloping surface sloping at an angle of more than 0° and less than 90° to an optical axis of the delivery fiber; and inserting the delivery fiber into a small hole in the small glass tube.

Abstract: An optical fiber cable includes: a core including an optical fiber; a first protective layer covering the core; and a second protective layer covering the first protective layer. An outer circumferential surface of the first protective layer has: one or more integrated regions fixed to or in pressure contact with the second protective layer; and one or more non-integrated regions neither fixed to nor in pressure contact with the second protective layer.

Abstract: A component-incorporated substrate of multi-layer structure includes: a first printed wiring base having an opening; a second printed wiring base in a first side of the first printed wiring base; a third printed wiring base in a second side of the first printed wiring base; an electronic component housed in the opening of the first printed wiring base; a via penetrating one or more of the first printed wiring base, the second printed wiring base and the third printed wiring base; and an adhesive layer that fills a gap between the electronic component and the opening, a gap between the first printed wiring base and the second printed wiring base, and a gap between the first printed wiring base and the third printed wiring base.

Abstract: An optical fiber cable includes a core including an optical fiber, a restricting member longitudinally attached to and covering the core, a sheath covering the restricting member, and a ripcord disposed between the sheath and the core and between a first part of the restricting member and a second part of the restricting member.

Abstract: A ferrule for an optical connector includes: a ferrule main body including: a connection end surface; an upper surface; a lower surface opposite to the upper surface in a vertical direction, and fiber holes into which optical fibers are inserted along a front-rear direction perpendicular to the vertical direction, and that are arranged in a left-right direction perpendicular to the vertical direction and the front-rear direction. The connection end surface is disposed on a front side in the front-rear direction. Inner diameters of rear end openings of the fiber holes are in a range of 204.6 to 230.0 ?m, wherein the rear end openings are disposed on a rear side opposite to the front side in the front-rear direction. A wall surface covers an entirety of the upper surface and the lower surface.

Abstract: An end part structure for an optical connector includes a ferrule having a connection end face and a fiber hole into which an optical fiber is inserted up to the connection end face, a spring disposed at a rear side of the ferrule in a longitudinal direction of the fiber hole, a spring push that surrounds the optical fiber, a housing that accommodates the ferrule and the spring and to which the spring push is locked such that the ferrule is biased forward by the spring, a braided tube mounted on the spring push, and a fixing member that fixes the braided tube to the spring push. The spring is sandwiched between the spring push and the ferrule in the longitudinal direction.

Abstract: An optical connector cleaning tool that cleans a connection end surface of an optical connector includes a cleaning shaft that includes a pressing surface that presses a cleaning element having a belt shape against the connection end surface and holds the cleaning element turned back at the pressing surface, a supply part that supplies the cleaning element to the pressing surface via a supply path, and a collection part that collects the cleaning element from the pressing surface via a collection path. The cleaning shaft further includes a first main surface and a second main surface opposite to the first main surface. The supply path and the collection path are along the first and second surfaces. The optical connector cleaning tool further includes a path reversing part that reverses the supply path and the collection path between the first main surface and the second main surface.

Abstract: An optical connection component includes: an input end that separates each of light beams output from an output end surface of a multi-core fiber toward single-core fibers, and enlarges each beam diameter of the light beams; and an output end that allows the light beams from the input end to be parallel to an axial direction of the multi-core fiber. The optical connection component guides the light beams output from the output end surface, inclined with respect to a plane perpendicular to the axial direction, to the single-core fibers, wherein the light beams output from the output end surface propagate in a direction inclined with respect to the axial direction.

Abstract: A cable that protects an object includes a sheath and a cylindrical reinforcement member disposed inside the sheath and that surrounds the object. The cylindrical reinforcement member has a first side edge and a second side edge that extend in a longitudinal direction. The cylindrical reinforcement member is formed of a cable reinforcement sheet including a first metal sheet and a second metal sheet joined to the first metal sheet. A portion of the first metal sheet overlaps a portion of the second metal sheet, and the overlapping portions define a joint portion where the first metal sheet and the second metal sheet are joined. The joint portion is inclined, from the second side edge to the first side edge, toward the first metal sheet.

Abstract: Provided is a flame retardant resin composition that includes a base resin, a filler blended in a ratio of 5 parts by mass or more relative to 100 parts by mass of the base resin, a silicone compound blended in a ratio of 0.5 part by mass or more relative to 100 parts by mass of the base resin, and a fatty acid-containing compound blended in a ratio of 3 parts by mass or more relative to 100 parts by mass of the base resin. The filler may have a silane coupling agent having a polar group adhered to at least a part of a surface of a silicate compound. Further provided are an insulated wire, a cable, and an optical fiber cable that includes in part the flame retardant resin composition.

Abstract: An optical connector includes: a ferrule that holds an end part of a fiber; and a holding member including: a holding part that slidably holds the ferrule; a fixing part through which the fiber extending from the ferrule is inserted and to which a sleeve for protecting a fusion splice point between the fiber and an optical fiber is fixed; and a housing part that houses the fiber between the holding part and the fixing part when the fiber is bent and the ferrule moves rearward of the housing part.

Abstract: In an array antenna device, a third power supply line includes an extension portion, a first branch line overlapping a first slot and a second branch line overlapping a second slot in a plan view, the first branch line and the second branch line branching from an extension portion. The length of the first branch line up to the first slot is equal to the length of the second branch line up to the second slot. In a plan view, a direction in which a tip end portion of the first branch line enters the first slot is opposite to a direction in which the extension portion extends in the first direction. In a plan view, a direction in which a tip end portion of the second branch line enters the second slot is opposite to a direction in which the extension portion extends in the first direction.

Abstract: An optical fiber cable includes: a multi-core optical fiber including a cladding and cores in the cladding; and a piece of arrangement information associated with the multi-core optical fiber and with a core arrangement of the cores in a cross-section of the multi-core optical fiber.

Abstract: An antenna module includes a first substrate that includes a first antenna element and a feeding line to a second antenna element and configured to handle a high-frequency signal in a millimeter wave band, a second substrate arranged to overlap a portion of the first substrate in plan view and configured to handle a baseband signal having a frequency band lower than that of the high-frequency signal, and a metal housing that includes a first accommodation space configured to accommodate a RFIC, a second accommodation space configured to accommodate a BBIC, and a shielding wall provided between the first accommodation space and the second accommodation space, the shielding wall is arranged to overlap the feeding line in plan view, and at least one of the shielding wall and the first substrate includes a non-interference portion configured to reduce interference between the shielding wall and the feeding line.

Abstract: A multicore optical ferrule includes a main body including a connection end surface configured to connect to a connection target and insertion holes into which optical fibers are respectively inserted. Each of the insertion holes extends from the connection end surface toward an inside of the main body. Each of the insertion holes has a first inner diameter portion open to the connection end surface and a second inner diameter portion having a diameter larger than a diameter of the first inner diameter portion. An inner wall of the first inner diameter portion of each of the insertion holes includes micro holes.