Abstract: A joint connector includes the plurality of wires extending in an extending direction, a plurality of terminals to be respectively connected to front end parts of the plurality of wires in the extending direction, a lower housing for accommodating the plurality of terminals, a busbar to be disposed in the lower housing, and an upper cover to be assembled with the lower housing. The busbar includes a plurality of tabs. Each of the plurality of terminals includes a tube portion, into which each of the plurality of tabs is inserted, and a wire connecting portion to be connected to each of the plurality of wires. The plurality of wires drawn out rearward in the extending direction from the lower housing include bent portions folded forward in the extending direction. The upper cover includes wire pressing portions for holding the plurality of wires folded forward in the extending direction.

Abstract: An in-vehicle communication system includes a first switching device and a second switching device each configured to relay, via a transmission path, information between a plurality of function units mounted to a vehicle. Upon being supplied with a power source voltage via a power-source-dedicated line from a power source device mounted to the vehicle, the first switching device supplies a power source voltage via the transmission path to one or a plurality of the function units and the second switching device that are connected to the first switching device, and the second switching device extracts a power source voltage from the transmission path, and supplies a power source voltage via the transmission path to one or a plurality of the function units that are connected to the second switching device.

Abstract: A semiconductor photodetector includes an optical absorption layer. The optical absorption layer includes a plurality of unit structures stacked in a first direction, each of the plurality of unit structures includes a laminate and a gallium arsenide antimonide layer, the laminate includes a first gallium arsenide layer including j gallium arsenide monolayers, a first indium arsenide layer including m indium arsenide monolayers, k stacked structures, and a second gallium arsenide layer including (j?1) gallium arsenide monolayers, each of the k stacked structures includes a third gallium arsenide layer including n gallium arsenide monolayers, and a second indium arsenide layer including m indium arsenide monolayers, j, m, and n are each an integer of 1 or more, and k is an integer of 0 or more.

Abstract: A detection device includes: a monitoring unit configured to monitor a periodic message and an event message as messages in an in-vehicle network, each message having, assigned thereto, identification information of a transmission source and a sequence number; a counter unit configured to change a counter value corresponding to the identification information, when the detection device has received the event message from the in-vehicle network; and a detection unit configured to compare the sequence number with the counter value, based on a result of monitoring, and perform provisional determination for detection of an unauthorized message, based on a result of the comparison. The detection unit performs conclusive determination for detection of the unauthorized message, based on an interval of messages that satisfy a predetermined condition regarding the sequence number, among messages to which the same identification information is assigned, and on a predetermined transmission cycle of the periodic message.

Abstract: A diamond sensor unit includes: a sensor part that includes a diamond having a color center with electron spin; an irradiation part that irradiates the diamond with excitation light; a detection part that detects radiated light from the color center of the diamond; and an optical waveguide that transmits the excitation light, and the radiated light.

Abstract: A semiconductor photodetector includes a first group III-V semiconductor layer of a first conductivity type; a second group III-V semiconductor layer of a second conductivity type; and an optical absorption layer disposed between the first group III-V semiconductor layer and the second group III-V semiconductor layer in a first direction. The optical absorption layer includes a plurality of unit structures stacked in the first direction. Each of the plurality of unit structures includes a gallium arsenide layer, an indium arsenide layer, and a gallium arsenide antimonide layer. The gallium arsenide layer and the indium arsenide layer each have a thickness smaller than a thickness of the gallium arsenide antimonide layer.

Abstract: A spot size converter includes a first optical waveguide, and a second optical waveguide. The first optical waveguide has a first tapered portion. The first tapered portion extends in a direction in which the first optical waveguide extends, and is thicker with decreasing distance from an end portion of the first optical waveguide and is thinner with decreasing distance from the second optical waveguide. The second optical waveguide is separated from the first tapered portion and has a second tapered portion. The second tapered portion extends in a direction in which the second optical waveguide extends, and is thinner with decreasing distance from the first tapered portion and is thicker with increasing distance from the first tapered portion.

Abstract: A flexible printed circuit board includes: a base film having a hole for forming a through hole; and a coil-shaped wiring layer layered on at least one surface side of the base film, wherein the wiring layer includes a land portion arranged at an inner peripheral surface of the hole and at a peripheral portion of the hole of the base film, and a winding portion arranged in a spiral shape with the land portion as an inside end portion or an outside end portion, wherein the winding portion includes a first winding portion that is an outermost circumference and a second winding portion that is inside relative to the outermost circumference, and wherein a ratio of an average thickness of the land portion to an average thickness of the second winding portion is 1.1 or more and 5 or less.

Abstract: An in-vehicle communication device on a transmitting side of a message includes: a delay time measuring unit measuring a delay time from when transmission of a message is first attempted to when the transmission of the message is started; and an assigning unit assigning the delay time measured by the delay time measuring unit to the message. An in-vehicle communication device on a receiving side of a message includes: a reception point acquisition unit acquiring a point in time when a message from the in-vehicle communication device on the transmitting side is received; a delay time acquisition unit acquiring a delay time assigned to the received message; and a calculation unit calculating a transmission cycle of each message based on a point in time acquired by the reception point acquisition unit and a delay time acquired by the delay time acquisition unit for each of two received messages.

Abstract: A system including: one or a plurality of sensors correspondingly connected to each of a plurality of devices; a reception unit configured to receive sensor information corresponding to a detection signal of each of the one or plurality of sensors, the sensor information being transmitted from the plurality of devices; a plurality of processing units configured to process the sensor information received by the reception unit; and a control unit configured to input the sensor information received by the reception unit, to any of the plurality of processing units, on the basis of information about delay in communication of the sensor information.

Abstract: An object is to provide a technique that can make it easy to achieve favorable heat dissipation performance. An electrical junction box includes: a circuit substrate in which a via hole is formed; a blocking member that blocks the via hole; a heat-transfer member provided in a region of a main surface of the circuit substrate in which the via hole is formed; and a heat dissipation member that comes into contact with the heat-transfer member from the opposite side to the circuit substrate, wherein the blocking member is a solid member, and fills at least the main surface side of the via hole.

Abstract: In a lithium ion secondary battery (1), a positive electrode (2) and a negative electrode (3) are alternately adjacent to each other via separators (4) and (5). The positive electrode (2) includes a positive electrode current collector composed of a metal porous body, a first positive electrode active material (21) held on one side of the positive electrode current collector, and a second positive electrode active material (22) held on the other side. The negative electrode (3) includes a negative electrode current collector composed of a metal porous body, a first negative electrode active material (31) held on one side of the negative electrode current collector, and a second negative electrode active material (32) held on the other side. The first positive electrode active material (21) faces the first negative electrode active material (31), and the positive electrode active material (22) faces the second negative electrode active material (32).

Abstract: A resin composition comprises: a base resin containing an oligomer, a monomer, and a photopolymerization initiator; and inorganic oxide particles, wherein the inorganic oxide particles are lump-shaped aggregated particles, and the volume average particle size of the inorganic oxide particles measured by an X-ray small angle scattering method is 5 nm or more and 800 nm or less.

Abstract: A resin composition for primary coating of an optical fiber contains a photopolymerizable compound containing a urethane (meth)acrylate containing a reaction product of a polypropylene polyol having a number average molecular weight of 8000 or more and 20000 or less and an isocyanate group-containing (meth)acrylate and a photopolymerization initiator.

Abstract: An optical connector includes a ferrule, a ferrule holder, a housing, and an anti-rotation structure. The ferrule includes a through hole that extends in a first direction and holds an optical fiber inside the through hole. The ferrule holder is disposed on the outer periphery of the ferrule and is fixed to the ferrule. The anti-rotation structure is provided inside the housing and outside the ferrule, and prevents rotation of the ferrule about an axis with the ferrule holder. The ferrule holder includes a tubular holder main body that accommodates the ferrule therein, and a flange part that protrudes outward from the outer periphery of the holder main body. The flange part includes a configuration to fit with the anti-rotation structure. A center of the flange part in the first direction is located in a central region of the ferrule in the first direction.

Abstract: A cutting tool is a cutting tool comprising a substrate and a coating film disposed on the substrate, in which the coating film includes a first layer, the first layer is composed of an alternate layer where a first unit layer and a second unit layer are alternately stacked, the first unit layer is composed of Ti1-a-bAlaCebN, a is between greater than or equal to 0.350 and equal to or less than 0.650, b is between greater than or equal to 0.001 and equal to or less than 0.100, the second unit layer is composed of TicSi1-cN, and c is between greater than or equal to 0.20 and equal to or less than 0.99.

Abstract: A cutting tool is a cutting tool comprising a substrate and a coating film disposed on the substrate, in which the coating film includes a first layer, the first layer is composed of an alternate layer where a first unit layer and a second unit layer are alternately stacked, the first unit layer is composed of Ti1-a-bAlaCebN, a is 0.350 or more and 0.650 or less, b is 0.001 or more and 0.100 or less, the second unit layer is composed of AlcCr1-cN, c is 0.40 or more and 0.75 or less, and a and c satisfy a relationship of c>a.

Abstract: A method for installing a radio wave sensor configured to radiate a radio wave to a range including a target area that is set for detection of an object. The method includes: a step of installing a reference object; and a step of adjusting a radio wave radiation direction of the radio wave sensor, using the reference object as a reference. The reference object is installed at a first position outside the target area.

Abstract: A cutting tool is a cutting tool comprising a substrate and a coating film disposed on the substrate, in which the coating film includes a first layer, the first layer is composed of an alternate layer where a first unit layer and a second unit layer are alternately stacked, the first unit layer is composed of Ti1-a-bAlaCebN, a is 0.350 or more and 0.650 or less, b is 0.001 or more and 0.100 or less, the second unit layer is composed of AlcV1-cN, c is 0.40 or more and 0.75 or less, and a and c satisfy a relationship of c>a.

Abstract: The heat shrinkable tube according to the present disclosure contains an ethylene-tetrafluoroethylene copolymer as a main component. The heat shrinkable tube has a melting point of 210° C. to 250° C. and a storage elastic modulus of 0.8 MPa to 2.8 MPa at 250° C. to 280° C.