Abstract: Provided is a semiconductor device capable of reducing switching loss at turn-off while suppressing conduction loss. An emitter p? layer 11, a collector p layer 23, a drift layer 10, an emitter electrode 18, a collector electrode 28, an emitter-side gate electrode 17, an emitter n layer 12, a collector p? layer 23a, a collector-side gate electrode 27, and a collector n layer 22 configure a semiconductor device 1, and a total length of a first facing region of the emitter-side gate electrode 17 in a gate width direction facing an emitter layer p? 11 via a gate insulating film 15 is longer than the total length in the gate width direction of a second facing region of a collector-side gate electrode 27 facing an impurity layer 23a via a collector-side gate insulating film 25.

Abstract: Rimless eyeglasses are provided, which do not produce loosening in a connecting area between an eyeglass lens and a lens fixing portion, and which also allows for the easy attachment or removal of a lens. The rimless eyeglasses include eyeglass lenses and as eyeglass components, a metallic end-piece member and a metallic bridge member, having a lens fixing portion fixedly attached to the eyeglass lens and a connecting portion connected to a temple or a bridge. The lens fixing portions of the metallic end-piece member and the metallic bridge member have cylindrical leg portions, each inserted into a lens hole formed in the eyeglass lens. Spiral-shaped grooves are formed in the outer peripheral faces of the leg portions. An adhesive is injected into the spiral-shaped grooves.

Abstract: Rimless eyeglasses are provided, which do not produce loosening in a connecting area between an eyeglass lens and a lens fixing portion, and which also allows for the easy attachment or removal of a lens. The rimless eyeglasses (100U) comprise eyeglass lenses (110U) and as eyeglass components, a metallic end-piece member (120U) and a metallic bridge member (130), having a lens fixing portion fixedly attached to the eyeglass lens and a connecting portion connected to a temple or a bridge. The lens fixing portions of the metallic end-piece member (120U) and the metallic bridge member (130) have cylindrical leg portions (122U) and (132) each inserted into a lens hole (112) formed in the eyeglass lens (110U). Spiral-shaped grooves (128) and (138) are formed in the outer peripheral faces of the leg portions. An adhesive is injected into the spiral-shaped grooves (128) and (138).

Abstract: A method of producing Nb3Sn superconducting wire, including the steps of: preparing a plurality of Sn modules obtained by burying Sn-based metal cores in a Cu-based metal matrix and a plurality of Nb modules obtained by burying Nb-based metal filaments in a Cu-based metal matrix; bundling the Nb modules and the Sn modules such that the Nb modules surround the Sn modules and obtaining an assembly; inserting the assembly in a tubular member of Cu-based metal which internally comprises tube-like shaped Ta-based metal or Nb-based metal which serves as a diffusion barrier and obtaining a composite; drawing the composite; and heat-treating the composite.

Abstract: A spectacle frame according to the present invention includes a pair of lens hangers each having a lens connector at a distal end thereof, and a pair of fixing barrels for supporting proximal ends of the lens hangers to be rotatable on a leftward/rightward axis, and joined to a brow bar. The fixing barrel has a supporting hole extending leftward/rightward, an outer circumference concentric with the supporting hole, having a predetermined radius of curvature, and an annular groove formed on the outer circumference. The lens hanger which is made of a metallic wire has a shaft portion fit in a rotatable manner into the supporting hole of the fixing barrel, an engagement portion engageable with the annular groove of the fixing barrel, and a spring portion formed between the shaft portion and the engagement portion to elastically bias the engagement portion toward the annular groove.

Abstract: A spectacle frame according to the present invention includes a pair of lens hangers each having a lens connector at a distal end thereof, and a pair of fixing barrels for supporting proximal ends of the lens hangers to be rotatable on a leftward/rightward axis, and joined to a brow bar. The fixing barrel has a supporting hole extending leftward/rightward, an outer circumference concentric with the supporting hole, having a predetermined radius of curvature, and an annular groove formed on the outer circumference. The lens hanger which is made of a metallic wire has a shaft portion fit in a rotatable manner into the supporting hole of the fixing barrel, an engagement portion engageable with the annular groove of the fixing barrel, and a spring portion formed between the shaft portion and the engagement portion to elastically bias the engagement portion toward the annular groove.

Abstract: A method of producing Nb3Sn superconducting wire, including the steps of: preparing a plurality of Sn modules obtained by burying Sn-based metal cores in a Cu-based metal matrix and a plurality of Nb modules obtained by burying Nb-based metal filaments in a Cu-based metal matrix; bundling the Nb modules and the Sn modules such that the Nb modules surround the Sn modules and obtaining an assembly; inserting the assembly in a tubular member of Cu-based metal which internally comprises tube-like shaped Ta-based metal or Nb-based metal which serves as a diffusion barrier and obtaining a composite; drawing the composite; and heat-treating the composite.

Abstract: Eyeglasses with a connecting structure preventing deformation of parts or breakage of lenses even if excessive force is exerted on the eyeglasses, and a screwless hinge avoiding deflection of temple in vertical directions and stable in opening and closing. The connecting structure includes first member, fixed to lens, having mounting groove formed at outer periphery thereof and second member, connected to temple or bridge, having U-shaped bent portion introduced from one direction and resiliently engaging with the groove. The hinge includes cylindrical member provided on an end member, and J-shaped bent portion formed on the end of the temple, the bent member including first leg to be inserted into center hole of the cylindrical member and second leg contacting with outer periphery of the cylindrical member, when the first leg is inserted into the center hole, the first and second legs resiliently clamping the cylindrical member.

Abstract: Eyeglasses with a connecting structure preventing deformation of parts or breakage of lenses even if excessive force is exerted on the eyeglasses, and a screwless hinge avoiding deflection of temple in vertical directions and stable in opening and closing. The connecting structure includes first member, fixed to lens, having mounting groove formed at outer periphery thereof and second member, connected to temple or bridge, having U-shaped bent portion introduced from one direction and resiliently engaging with the groove. The hinge includes cylindrical member provided on an end member, and J-shaped bent portion formed on the end of the temple, the bent member including first leg to be inserted into center hole of the cylindrical member and second leg contacting with outer periphery of the cylindrical member, when the first leg is inserted into the center hole, the first and second legs resiliently clamping the cylindrical member.