Abstract: A package includes: a bottom portion having a mounting surface; and a lateral wall portion having a top surface and including: a lateral wall having a rectangular outer shape in a top view and surrounding the mounting surface, and a stepped portion formed along the lateral wall below the top surface. In the top view, the stepped portion includes a wide portion and a narrow portion that are two regions having different widths. The narrow portion is formed on a portion along a one side of an entire circumference of the lateral wall.

Abstract: A light emitting device includes a package, a cap fixed to the package, and at least one laser element. The cap includes a light-transmissive member having a lower surface facing the package and an upper surface opposite to the lower surface, and a light blocking film arranged on the lower surface of the light-transmissive member and having a shape which has at least one opening. The at least one laser element is disposed in a space bounded by the cap and the package at a position such that the at least one opening is irradiated by laser light emitted from the at least one laser element, at least a part of each of the at least one laser element being disposed in the at least one opening in the light blocking film in a top view.

Abstract: A light emitting device includes: a substrate including a main surface; a first projection positioned on the main surface, the first projection including an upper surface and first and second lateral surfaces, wherein the first lateral surface of the first projection comprises a first reflective part, and the second lateral surface of the first projection comprises a second reflective part; a first laser element positioned on the main surface at a first reflective part side with respect to the first projection, the first laser element being configured to irradiate first laser light to the first reflective part; a second laser element positioned on the main surface at a second reflective part side with respect to the first projection, the second laser element being configured to irradiate second laser light to the second reflective part; and a first optical member bonded to the upper surface of the first projection.

Abstract: The light detector includes a light detection substrate having at least one light receiving region and a light incident surface on which a detection target light is incident, and a meta-lens including a plurality of unit structures arranged in a grid pattern and disposed on the light incident surface to focus the detection target light. When viewed in a thickness direction of the light detection substrate, an opening region in which no unit structure is formed is provided in a region including a center of the meta-lens.

Abstract: A rotor core includes a shaft hole, into which a shaft is inserted, and keys, which are protrusions corresponding to keyways of the shaft. A radial distance, which is the distance from the center of the shaft hole to an inner wall varies depending on the position in the circumferential direction of the shaft hole. The shaft hole includes key regions and increased diameter regions, in each of which the radial distance is longer than the radius of the shaft. Keys are respectively arranged in the key region. The shaft hole also includes contact regions, in which the shaft and the inner wall come into contact with each other when the shaft is inserted into the shaft hole. The contact regions are each located between the key regions or between the increased diameter regions. The contact regions are arranged at equal intervals in the circumferential direction.

Abstract: [Object] To provide a Cu—Ti-based copper alloy sheet material having a strength, an electrical conductivity, bending workability, and a stress relaxation property all at high levels in a good balance, and also having a reduced density (specific gravity). [Means for Solution] A copper alloy sheet material composed of, in mass %, Ti: 1.0 to 5.0%, Al: 0.5 to 3.0%, Ag: 0 to 0.3%, B: 0 to 0.3%, Be: 0 to 0.15%, Co: 0 to 1.0%, Cr: 0 to 1.0%, Fe: 0 to 1.0%, Mg: 0 to 0.5%, Mn: 0 to 1.5%, Nb: 0 to 0.5%, Ni: 0 to 1.0%, P: 0 to 0.2%, Si: 0 to 0.5%, Sn: 0 to 1.5%, V: 0 to 1.0%, Zn: 0 to 2.0%, Zr: 0 to 1.0%, S: 0 to 0.2%, rare earth elements: 0 to 3.0%, and the balance substantially being Cu, wherein a maximum width of a grain boundary reaction type precipitate existing region is 1000 nm or less, a KAM value when a boundary with a crystal orientation difference of 15° or more measured by EBSD (step size: 0.1 ?m) is rewarded as a crystal grain boundary is 3.

Abstract: A light emitting device includes a first light-emitting element configured to emit a first light in a first direction, a second light-emitting element configured to emit a second light in the first direction, a package including a substrate and a cap, having a light emission surface through which the first light and second light emitted from the first and second light-emitting elements are passed, and forming a closed space in which the first and second light-emitting elements are located, one or more optical members that are spaced away from the light emission surface in the first direction, and that are configured to combine the first light and second light, and one or more photodetectors that are spaced away from the light emission surface in the first direction, and that are configured to receive the first light and second light.

Abstract: A method of manufacturing a semiconductor device includes: preparing a bottom plate having an upper surface and a lower surface, wherein the lower surface of the bottom plate comprises a reference part and one or more inclined surfaces that are inclined with respect to the reference part, an upper portion of the one or more inclined surfaces being positioned above the reference part, and wherein a thickness of the bottom plate at the reference part is greater than a thickness of the bottom plate at the upper portion of the one or more inclined surfaces; joining a frame member to the bottom plate, at least a part of the frame member being disposed directly above the one or more inclined surfaces, a linear expansion coefficient of the frame member being smaller than a linear expansion coefficient of the bottom plate; and fixing a semiconductor element to the bottom plate.

Abstract: In an antenna element, a planar ground conductor layer on an insulation substrate is connected to ground. A radiation conductor layer radiates and/or receives high-frequency signals. The radiation conductor layer is in or on the insulation substrate and above the planar ground conductor layer. A lower principal surface of the radiation conductor layer overlaps an upper principal surface of the planar ground conductor layer as viewed in an up-down direction. The ground conductor is in the insulation substrate and connected to the ground potential. An upper end of the ground conductor is above the radiation conductor layer. The ground conductor layer is spaced away from the radiation conductor layer as viewed in the up-down direction. Only a conductor through which the high-frequency signals are transmitted and a conductor connected to the ground potential are between the ground conductor and the radiation conductor layer.

Abstract: A semiconductor device includes: a bottom plate having an upper surface and a lower surface, wherein the upper surface comprises an outer peripheral part and an inside part that is enclosed by the outer peripheral part and that protrudes more upward than the outer peripheral part; a frame joined to the upper surface of the bottom plate and comprising a first through-hole that penetrates the frame; a plate jointed to the outside or inside surface of the frame, the plate comprising a second through-hole that penetrates the plate in a same direction as that of the first through-hole, a thickness of the plate being greater than a thickness of the frame; a lead terminal inserted into the first through-hole and the second through-hole; a fixing member provided in the second through-hole and fixing the lead terminal; and a semiconductor element fixed to the inside part.

Abstract: A light emitting device includes: a substrate including a main surface; a first projection positioned on the main surface, the first projection including an upper surface and first and second lateral surfaces, wherein the first lateral surface of the first projection comprises a first reflective part, and the second lateral surface of the first projection comprises a second reflective part; a first laser element positioned on the main surface at a first reflective part side with respect to the first projection, the first laser element being configured to irradiate first laser light to the first reflective part; a second laser element positioned on the main surface at a second reflective part side with respect to the first projection, the second laser element being configured to irradiate second laser light to the second reflective part; and a first optical member bonded to the upper surface of the first projection.

Abstract: A light emitting device includes: a first light emitting element having a light emitting surface; an optical member having a lower surface, a first reflecting surface inclined to the lower surface, transmitting part of a first light emitted from the light emitting surface, and reflecting the rest upward, and a second reflecting surface located farther from the light emitting surface than the first reflecting surface and reflecting part or all of the first light passing through the first reflecting surface; and a photodetector located below the optical member and having a top surface provided with one or a plurality of light receiving regions including a first light receiving region configured to receive the first light reflected by the second reflecting surface. In a top view, part or all of the first light receiving region overlaps part or all of the first reflecting surface.

Abstract: A game system, a game method, and a game program, which allow the user to enjoy a game with peace of mind even if a bias is provided in predetermined parameters. The game system is configured to acquire, as available environment information indicating an available environment for a game to be executed on a user terminal used by the user, information indicating a type of an operating system (OS); and determine a parameter to be used to provide a content to the user each time the user performs an input operation on the basis of the information indicating the type of the OS associated with the user at the time of the input operation.

Abstract: A light emitting device includes: a lens member having at least one lens surface; a submount; and a plurality of light emitting elements arranged in a row on an upper face of the submount, including a first light emitting element configured to emit first light having an emission peak at a first wavelength and a second light emitting element configured to emit second light having an emission peak at a second wavelength from a second light emission point, the second wavelength being different from the first wavelength, and the second light emission point being located farther from the lens member than a first plane that is perpendicular to an optical axis of the lens surface and that passes through the first light emission point.

Abstract: A heat exchange structure includes: two flow channels stacked in a stacking direction (Y direction) and thermally coupled to each other; and a fin structure detachably installed in at least one flow channel of the two flow channels. The fin structure includes fins arranged in a longitudinal direction (Z direction) of the at least one flow channel in which the fin structure is installed, the fins configured to form openings alternately arranged along the at least one flow channel on one side and the other side of the at least one flow channel in the stacking direction.

Abstract: A heat exchange structure includes: two flow channels stacked in a stacking direction (Y direction) and thermally coupled to each other; and a fin structure detachably installed in at least one flow channel of the two flow channels. The fin structure includes fins arranged in a longitudinal direction (Z direction) of the at least one flow channel in which the fin structure is installed, the fins configured to form openings alternately arranged along the at least one flow channel on one side and the other side of the at least one flow channel in a width direction (X direction).

Abstract: A metal titanium production apparatus includes: a reductor that subjects titanium tetrachloride to a reduction process in presence of bismuth and magnesium to obtain a liquid alloy containing titanium and the bismuth; a segregator that subjects the liquid alloy to a segregation process to obtain a precipitate; and a distillator that subjects the precipitate to a distillation process to obtain metal titanium, and the distillator sets an atmosphere so as to preferentially vaporize the bismuth attached to the precipitate and then sets the atmosphere so as to vaporize the bismuth forming the precipitate.

Abstract: A light emitting device includes: a substrate including a main surface; a first projection positioned on the main surface, the first projection including an upper surface and first and second lateral surfaces, wherein the first lateral surface of the first projection comprises a first reflective part, and the second lateral surface of the first projection comprises a second reflective part; a first laser element configured to irradiate laser light to the first reflective part; a second laser element configured to irradiate laser light to the second reflective part; and a first optical member fixed to the upper surface of the first projection, wherein the first optical member comprises a first lens part positioned above the first reflective part, and a second lens part positioned above the second reflective part.

Abstract: A light-emitting device includes a mounting member, first to third light-emitting elements mounted on a mounting surface, and first to third protective elements mounted on the mounting surface and respectively electrically connected to the first to third light-emitting elements. In a plan view viewed along a normal direction of the mounting surface, at least a part of the first protective element is disposed between the first light-emitting element and the second light-emitting element, at least a part of the second protective element and at least a part of the third protective element are disposed between the second light-emitting element and the third light-emitting element, and the second light-emitting element is disposed between the first light-emitting element and the third light-emitting element.

Abstract: A light emitting module includes: a first light emitting device including: a first package, a plurality of first semiconductor laser elements mounted in the first package, and a first lens member having lens portions, a number of the lens portion is the same as a number of the first semiconductor laser elements; and a second light emitting device including: a second package, a plurality of second semiconductor laser elements mounted in the second package, wherein a quantity of the second semiconductor laser elements is fewer than a quantity of the first semiconductor laser elements, and a second lens member which is structured the same as the first lens member; and one or more mounting substrates in which the first light emitting device and the second light emitting device are mounted.