Abstract: A laser diode drive circuit is provided that includes a plurality of laser diodes having cathode sides connected in common, a capacitor that supplies a current to the laser diodes, and a switching element. The laser diode drive circuit further includes a driving power supply that supplies a current to the capacitor, a diode that restricts a flow of the current in a direction of charging of the capacitor, and current suppression elements provided on anode sides of the plurality of laser diodes, respectively, the current suppression elements suppressing a flow of the current that flows to one laser diode to another laser diode in discharging of the capacitor.

Abstract: An electronic component including: a semiconductor substrate; a dielectric layer adjacent a surface of the semiconductor substrate; a first internal electrode electrically connected to the semiconductor substrate; a second internal electrode adjacent a surface of the dielectric layer; an insulator layer adjacent the surface of the semiconductor substrate and covering the first internal electrode and the second internal electrode; a first extended electrode electrically connected to the first internal electrode; a second extended electrode electrically connected to the second internal electrode, wherein when viewed in a direction perpendicular to a plane of the semiconductor substrate, the second extended electrode is inside the second internal electrode; a first external electrode electrically connected to the first extended electrode; and a second external electrode electrically connected to the second extended electrode.

Abstract: An electronic component including: a semiconductor substrate; an insulator layer on a first surface of the semiconductor substrate; a plurality of conductor layers on and/or in the insulator layer; a dielectric layer on the first surface of the semiconductor substrate; a lower surface electrode on a second surface of the semiconductor substrate, wherein: at least a first conductor layer of the plurality of conductor layers is a wiring pattern, at least a second conductor layer of the plurality of conductor layers is a plate electrode paired with the semiconductor substrate or the lower surface electrode across the dielectric layer, and the semiconductor substrate has a first region that includes the dielectric layer and the plate electrode and a second region other than the first region; and a conductor portion with higher conductivity than the semiconductor substrate in the first region at a higher ratio than in the second region.

Abstract: The light-emitting device includes a solid-state light-emitting element, driving capacitors and a switching element which are formed on/in a substrate. When the switching element is turned on, the switching element forms a driving current loop for discharging charged electric charges of the driving capacitors to the solid-state light-emitting element. The driving capacitors are configured to store a driving electric charge for the solid-state light-emitting element and are connected in parallel. Each of the capacitors, the solid-state light-emitting element, and the switching element form a plurality of driving current loops. The capacitances of the capacitors are substantially equal, and the capacitors are formed at substantially equidistant positions from the solid-state light-emitting element.

Abstract: A composition includes a thermoplastic polymer and a polyrotaxane. The polyrotaxane includes a plurality of cyclic molecules and a chain polymer passing through the plurality of the cyclic molecules in a skewering manner, at least a part of the hydroxyl groups of the plurality of cyclic molecules being substituted with a hydrophobic group. A group that enhances miscibility of the polyrotaxane to the thermoplastic polymeris bound to at least a part of the hydrophobic groups of each of the plurality of cyclic molecules.

Abstract: The present disclosure provides a light-emitting device that is able to output light with a shorter pulse. A light-emitting device according to the present disclosure includes a capacitor, one or more solid-state light-emitting elements that emit light when electric power is supplied from the capacitor, and a semiconductor switch that controls electric power supply from the capacitor to the solid-state light-emitting element. Furthermore, the solid-state light-emitting element is placed on an outer face of the capacitor, the semiconductor switch is placed on the outer face of the capacitor or provided inside the capacitor, and the capacitor includes a connecting electrode between outer electrodes, the connecting electrode allowing the solid-state light-emitting element and the semiconductor switch to be connected in series.

Abstract: The present invention provides a crosslinked polymer composition exhibiting significantly improved elongation at break over conventional ones, and a polymer composition and a polyrotaxane, each of which can be used as a raw material of the crosslinked polymer composition. The polyrotaxane contains a linear molecule, a cyclic molecule, and a blocking group, wherein the cyclic molecule has a hydrosilyl group. The polymer composition contains the polyrotaxane and a polymer, wherein the polymer has a double bond on at least either a main chain or a side chain. The crosslinked polymer composition is produced by crosslinking of the polymer composition through chemical reaction between the hydrosilyl group of the cyclic molecule and the double bond of the polymer.

Abstract: A laser diode driver circuit is provided that has a loop including a laser diode, a drive capacitor for storing drive charge, and a switch element, a first inductor coupled in series with the laser diode, a parallel capacitor coupled in parallel with a series circuit composed of the laser diode and the first inductor, and a first diode coupled in parallel with the series circuit in opposite polarity to the laser diode.

Abstract: A laser diode drive circuit is provided that includes a plurality of laser diodes having cathode sides connected in common, a capacitor that supplies a current to the laser diodes, and a switching element. The laser diode drive circuit further includes a driving power supply that supplies a current to the capacitor, a diode that restricts a flow of the current in a direction of charging of the capacitor, and current suppression elements provided on anode sides of the plurality of laser diodes, respectively, the current suppression elements suppressing a flow of the current that flows to one laser diode to another laser diode in discharging of the capacitor.

Abstract: The present disclosure provides a light-emitting device that is able to output light with a shorter pulse. A light-emitting device according to the present disclosure includes a capacitor, one or more solid-state light-emitting elements that emit light when electric power is supplied from the capacitor, and a semiconductor switch that controls electric power supply from the capacitor to the solid-state light-emitting element. Furthermore, the solid-state light-emitting element is placed on an outer face of the capacitor, the semiconductor switch is placed on the outer face of the capacitor or provided inside the capacitor, and the capacitor includes a connecting electrode between outer electrodes, the connecting electrode allowing the solid-state light-emitting element and the semiconductor switch to be connected in series.