Abstract: There is provided a lens element which can maintain an accuracy of the axis alignment between the lens elements and effectively suppress occurrence of ghosting and flares, and an imaging lens unit including such lens element. The fourth lens element 40 of the imaging lens unit 1 integrally comprises a lens portion 41 and an edge portion 42 surrounding the lens portion. The edge portion 42 is provided with an annular step portion 43 as an abut portion for axis alignment with a third lens element 30, and a light shielding portion 46 formed of vapor-deposited films are provided at the annular step portion 43.

Abstract: A method for manufacturing a railway vehicle wheel is provided. The method comprises: in an electric heating furnace or converter, preparing steel containing, in mass %. 0.65% to 0.84% of C, 0.1% to 1.5% of Si, 0.05% to 1.5% of Mn, 0.025% or less of P, 0.015% or less of S, 0.001% to 0.08% of Al, and 0.05% to 1.5% of Cr, the balance being Fe and incidental impurities; casting the steel to obtain a material; hot rolling and/or hot forging the material to form a wheel; heating the wheel to Ac3 point +50° C. or higher; cooling the wheel from a start temperature of 700° C. or higher to a stop temperature of 500° C. to 650° C. at a rate of 1° C./s to 10° C./s; and then air cooling the wheel.

Abstract: A high toughness and high tensile strength thick steel plate has a plate thickness of 100 mm or more, wherein a reduction of area in a center of the plate thickness by tension in a plate thickness direction is 40% or more. Thus, a high tensile strength thick steel plate with excellent strength and toughness in a center of the plate thickness can be obtained with no need for a larger production line, even in the case of producing a high strength thick steel plate for which the addition amount of alloying element needs to be increased.

Abstract: A steel plate has excellent strength and toughness in a mid-thickness part thereof, despite having a plate thickness of 100 mm or greater. The steel plate has a chemical composition containing specific amounts of C, Si, Mn, P, S, Cr, Ni, Al, N, B, and O, with the balance being Fe and incidental impurities, and having an equivalent carbon content CeqIIW of 0.65 or greater. The steel plate has a yield strength of 620 MPa or greater, a plate thickness of 100 mm or greater, and has a microstructure in which prior ? grain size in a mid-thickness part of the steel plate has a maximum value, expressed as an equivalent circle diameter, of 150 ?m or less, and a total area ratio of martensite and bainite in the mid-thickness part is 80% or greater.

Abstract: A ceramic electronic component according to the present disclosure includes a ceramic insulator and conductor portions including inner conductors disposed inside the ceramic insulator and outer conductors disposed outside the ceramic insulator, wherein each conductor portion has a surface and a back surface opposite to the surface, and at least one of the conductor portions includes a flat portion in which the conductor thickness is constant, surface corner portions having a round-chamfered shape in the direction from the surface toward the back surface of the inner conductor or the outer conductor, and back surface corner portions having a round-chamfered shape in the direction from the back surface toward the surface of the inner conductor or the outer conductor.

Abstract: A high-tensile-strength steel plate is provided with a new chemical composition design that guarantees the same properties as a 50 mm thick steel plate even in a steel plate with a thickness of 100 mm or greater, without the yield stress being affected by the plate thickness. By mass %, the chemical composition includes C: 0.02% to 0.08%, Si: 0.01% to 0.35%, Mn: 1.4% to 2.0%, P: 0.007% or less, S: 0.0035% or less, Al: 0.010% to 0.060%, Ni: 0.5% to 2.0%, Mo: 0.10% to 0.50%, Nb: 0.005% to 0.040%, Ti: 0.005% to 0.025%, B: less than 0.0003%, N: 0.002% to 0.005%, Ca: 0.0005% to 0.0050%, and O: 0.003% or less, with the components additionally satisfying a predetermined relationship.

Abstract: A weld joint with an excellent CTOD property is produced with a weld metal, using a steel plate as a base metal. The steel plate has a chemical composition including C: 0.03% to 0.09%, Si: 0.01% to 0.35%, Mn: 1.3% to 2.0%, P: 0.012% or less, S: 0.0035% or less, Al: 0.01% to 0.06%, Ni: less than 0.3%, Mo: less than 0.10%, Nb: 0.005% to 0.023%, Ti: 0.005% to 0.025%, B: less than 0.0003%, N: 0.002% to 0.005%, Ca: 0.0005% to 0.0050%, and O: 0.0030% or less, with the components additionally satisfying a predetermined relationship. The weld metal has a chemical composition including C: 0.040% to 0.090%, Si: 0.1% to 0.8%, Mn: 1.0% to 2.5%, Al: 0.020% or less, Ni: 0.1% to 1.0%, Mo: 0.05% to 0.50%, Ti: 0.005% to 0.050%, and B: 0.0015% or less, the balance being Fe and incidental impurities.

Abstract: A pearlitic rail includes a composition including in % by mass: 0.70% to 0.90% of C; 0.1% to 1.5% of Si; 0.01% to 1.5% of Mn; 0.001% to 0.035% of P; 0.0005% to 0.030% of S; 0.1% to 2.0% of Cr, remainder of the composition consisting of Fe and inevitable impurities. Surface hardness of a rail top is not less than HB 430, and hardness at a depth of 25 mm from a surface of the rail top is not less than HB 410.

Abstract: A steel plate has a chemical composition containing, by mass %, C: 0.03% or more and 0.10% or less, Si: 0.05% or more and 0.50% or less, Mn: 1.00% or more and 2.00% or less, P: 0.015% or less, S: 0.005% or less, Mo: 0.20% or less (including 0%), Nb: 0.01% or more and 0.05% or less, and the balance being Fe and inevitable impurities, and, if desired, containing, by mass %, one or more of Al: 0.005% or more and 0.1% or less, Cu: 1.00% or less, Ni: 1.00% or less, Cr: 0.50% or less, and V: 0.05% or less, in which Pcm* (%) (=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/2+V/10) is 0.20 or less. The steel plate has a volume fraction of bainite in a base material of 50% or more, and has a volume fraction of island martensite (MA) in a coarse-grain region reheated in a dual-phase temperature range of 5.0% or less.

Abstract: In a method for marking on a surface of a work, kept is a state where an end of a rotating tool for marking is contacted with a surface of the work, and a rotation of the rotating tool is started at the same time when a relative movement of the work in an X-axis direction and/or in a Y-axis direction relative to the rotating tool is started. According to the above marking method, a width of a marked line can be made constant over its entire length.

Abstract: There is provided a lens element which can maintain an accuracy of the axis alignment between the lens elements and effectively suppress occurrence of ghosting and flares, and an imaging lens unit including such lens element. The fourth lens element 40 of the imaging lens unit 1 integrally comprises a lens portion 41 and an edge portion 42 surrounding the lens portion. The edge portion 42 is provided with an annular step portion 43 as an abut portion for axis alignment with a third lens element 30, and a light shielding portion 46 formed of vapor-deposited films are provided at the annular step portion 43.

Abstract: A passenger's weight measurement device for a vehicle seat includes an upper rail provided on a lower rail that is fixable to a vehicle floor, the upper rail being movable in at least one of rear and front directions; a load sensor fixed onto the upper rail; and a frame provided on the load sensor and below the vehicle seat. In plan view, the load sensor protrudes from the frame in at least one of left and right directions.

Abstract: A passenger's weight measurement device for a vehicle seat includes an upper rail provided on a lower rail that is fixable to a vehicle floor, the upper rail being movable in at least one of rear and front directions; a load sensor fixed onto the upper rail; and a frame provided on the load sensor and below the vehicle seat. In plan view, the load sensor protrudes from the frame in at least one of left and right directions.

Abstract: Disclosed is, as a high-strength steel plate of API X80 grade or higher with a thickness of 38 mm or more, a thick steel plate for structural pipes or tubes that exhibits high strength in the rolling direction and excellent Charpy properties at its mid-thickness part without addition of large amounts of alloying elements. The thick steel plate for structural pipes or tubes disclosed herein has: a specific chemical composition; a microstructure at its mid-thickness part that is a dual-phase microstructure of ferrite and bainite with an area fraction of the ferrite being less than 50%, and that contains ferrite grains with a grain size of 15 ?m or less in an area fraction of 80% or more with respect to the whole area of the ferrite; a tensile strength of 620 MPa or more; and a Charpy absorption energy vE?20+ C. at ?20° C. at the mid-thickness part of 100 J or more.

Abstract: A punch die is provided and includes a punch body extending along an axial direction of the punch die and including a punch edge portion, a key, and a punch driver. The punch die also includes a punch guide configured to removably receive the punch body therein, the punch guide including an inner hollow that receives the punch body and a keyway that receives and guides the key. The punch die further includes a retainer collar detachably coupled to the punch guide and configured to permit the punch driver to pass therethrough and be movable along the axial direction. The punch guide includes a peripheral slot that intersects the keyway of the punch guide and the retainer collar includes a cylindrical projection and an engaging projection that is rotatable to engage the peripheral slot and to be releasably aligned with the keyway.

Abstract: Disclosed is, as a high-strength steel plate of API X100 grade or higher, a steel plate for structural pipes or tubes that exhibits high strength in a rolling direction and that has only a small difference between strength in a rolling direction and strength in a direction perpendicular to the rolling direction (exhibiting high material homogeneity) without addition of large amounts of alloying elements. The steel plate for structural pipes or tubes disclosed herein has: a specific chemical composition; a microstructure mainly composed of bainite and containing martensite austenite constituent in an area fraction of less than 3.0%; a tensile strength in the rolling direction of 760 MPa or more; and TSC?TSL being 30 MPa or less in terms of absolute value, where TSC denotes a tensile strength in a direction perpendicular to the rolling direction.

Abstract: A module 1a includes a multilayer wiring board 2, a component 3 that is mounted on a main surface 2a of the multilayer wiring board 2, a sealing-resin layer 4 that is laminated on the main surface 2a of the multilayer wiring board 2, and a resin coating layer 7 that coats a surface of the sealing-resin layer 4. The resin coating layer 7 includes a shield film 5 and outer electrodes 6, and opposite surfaces 6a of the outer electrodes 6 and an opposite surface 5a of the shield film 5 are formed on the same plane. The module 1a can be connected to, for example, an external antenna without using a wiring electrode of a mother substrate, and thus, signal loss can be suppressed.

Abstract: A punch die is provided. The punch die includes a punch body, a punch guide configured to removably receive the punch body therein, a retainer collar detachably coupled to the punch guide, a punch head mated to the punch body to regulate a position of the punch body, and a spring interposed between the punch head and the retainer collar. The punch guide includes a peripheral slot defined on the internal periphery of the punch guide such that the peripheral slot intersects a keyway of the punch guide. The retainer collar includes a cylindrical projection that extends into the inner periphery of the punch guide and an engaging projection defined on an outer periphery of the cylindrical projection. The engaging projection is rotatable to engage the peripheral slot and to be releasably aligned with the keyway.

Abstract: Provided is high strength steel for springs that, compared to conventional high strength steel for springs, has excellent decarburization resistance and scale exfoliation property, by optimization of the added amounts of C, Si, Mn, and Cr as well as of Sb and Sn. The steel for springs contains C: more than 0.45 mass % and less than 0.65 mass %, Si: 0.15 mass % or more and 0.70 mass % or less, Mn: 0.10 mass % or more and 1.00 mass % or less, Cr: 0.20 mass % or more and 1.50 mass % or less, P: 0.025 mass % or less, S: 0.025 mass % or less, O: 0.0015 mass % or less, Sb: 0.010 mass % or more and less than 0.030 mass %, and Sn: 0.010 mass % or more and 0.030 mass % or less, under predetermined conditions.

Abstract: There is provided a thick steel plate having good multipass weld joint CTOD characteristics for low to medium heat input and a method for manufacturing the thick steel plate. A steel plate containing, on a mass percent basis, C: 0.03% to 0.12%, Si: 0.5% or less, Mn: 1.0% to 2.0%, P: 0.015% or less, S: 0.0005% to 0.0050%, Al: 0.005% to 0.060%, Ni: 0.5% to 2.0%, Ti: 0.005% to 0.030%, N: 0.0015% to 0.0065%, O: 0.0010% to 0.0050%, Ca: 0.0005% to 0.0060%, and optionally one or two or more of Cu and the like, wherein Ti/N, Ceq, Pcm, and ACR are in particular ranges, a base material of the plate has an effective grain size of 20 ?m or less at half the thickness of the plate, and the plate contains a particular number of complex inclusions at ¼ and ½ of the thickness of the plate, the complex inclusions being composed of a sulfide containing Ca and Mn and an oxide containing Al and having an equivalent circular diameter of 0.1 ?m or more.