Abstract: A light-emitting device includes: a light-emitting element having a first surface as a light extraction surface, a second surface on an opposite side of the first surface, and a lateral surface connecting the first surface and the second surface and including an element electrode on the second surface; a substrate including a wiring member electrically connected to the element electrode; a light-transmissive member disposed above the first surface of the light-emitting element and allowing light from the light-emitting element to pass through; an inorganic member including a plurality of voids and disposed, on the substrate, on a lateral surface or lateral to the light-emitting element and on a lateral surface of the light-transmissive member; and a light-reflective member in contact with at least part of the inorganic member. A portion of the light-reflective member is impregnated in at least a portion of the plurality of voids.

Abstract: A method of producing a compound for bonded magnets, the method including: heat-curing a thermosetting resin and a curing agent having a ratio of the number of reactive groups of the curing agent to the number of reactive groups of the thermosetting resin of at least 2 but not higher than 11 to obtain an additive for bonded magnets; and kneading the additive for bonded magnets, magnetic powder, and a thermoplastic resin to obtain a compound for bonded magnets in which a filling ratio of the magnetic powder is at least 91.5% by mass.

Abstract: A light-emitting device includes: a light-emitting element including a first surface, a second surface, and a plurality of third surfaces, the light-emitting element including: a first conductive member and a second conductive member positioned at the second surface and arranged in a first direction; a covering member including: a first covering part covering a region of the second surface between the first conductive member and the second conductive member, and a second covering part covering the plurality of third surfaces, where the covering member does not cover at least a portion of the first conductive member and at least a portion of the second conductive member; a first metal film covering a portion of the first covering part; and a second metal film separated from the first metal film, the second metal film covering a portion of the first covering part.

Abstract: A light emitting device comprises a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less and a first fluorescent material having a light emission peak wavelength in a range of 570 nm or more and 680 nm or less, and emits light having a correlated color temperature being 1,950 K or less, an average color rendering index Ra being 70 or more, a full width at half maximum of a light emission peak having the maximum light emission intensity being 110 nm or less, and a ratio B/L of an effective radiance B to a luminance L being 0.151 or less, wherein the luminance of light emitted by the light emitting device in a range of 300 nm or more and 800 nm or less when B and L is as defined in the disclosure.

Abstract: Provided is a light-emitting device, a lighting appliance, and a street light that emit light with minimal negative effects on the behavior of sea turtles and which makes irradiated objects easily visible to humans. The light-emitting device includes a light-emitting element having an emission peak wavelength within a range from 400 nm to 490 nm; and a first phosphor having an emission peak wavelength within a range from 570 nm to 680 nm, wherein the light-emitting device, lighting appliance, and street light emit light that has a correlated color temperature of 1950 K or less, an average color rendering index Ra of 40 or greater, a full width at half maximum of an emission spectrum indicating a maximum emission intensity in an emission spectrum of the light-emitting device of 110 nm or less, and a sea turtle light attraction index T derived from Equation (1) of 0.416 or less.

Abstract: A light-emitting device includes: one or more light-emitting elements; a package in which the one or more light-emitting elements are arranged, the package including one or more wiring regions; an optical member fixed to the package, the optical member having a lens portion having a lens surface including a first lens, and a non-lens portion that is a portion that does not overlap the lens surface in a top view; and one or more adhesives fixing the optical member to the package. The package has an emission surface through which light from the one or more light-emitting elements exits the package. The optical member has an incidence surface on which the light exiting the package enters the optical member, and the lens surface from which the light that has entered the optical member exits the optical member.

Abstract: A method of manufacturing an image display device includes: providing a semiconductor growth substrate comprising a semiconductor layer; providing a circuit substrate comprising: a circuit element, a first wiring layer, and a first insulating film; forming a first metal layer that is located on the first insulating film and is electrically connected to the first wiring layer; bonding the semiconductor growth substrate to the circuit substrate and electrically connecting the first metal layer to the semiconductor layer; etching the semiconductor layer to form a light-emitting element; etching the first metal layer to form a plug electrically connected to the light-emitting element; forming a second insulating film covering the plug, the light-emitting element, and the first insulating film; removing a portion of the second insulating film to expose a light-emitting surface of the light-emitting element; and forming a second wiring layer electrically connected to the light-emitting surface.

Abstract: Provided are core-shell semiconductor nanoparticles, each including a core and a shell disposed on a surface of the core, and emitting light when irradiated with light. The core contains a semiconductor containing M1, M2, and Z, M1 containing at least one selected from the group consisting of Ag, Cu, and Au, M2 containing at least one selected from the group consisting of Al, Ga, In, and Tl, and Z containing at least one selected from the group consisting of S, Se, and Te. The shell contains a semiconductor containing a Group 13 element and a Group 16 element, and having a greater band-gap energy than the core. The shell has a compound containing a Group 15 element disposed on a surface of the shell, and the Group 15 element containing at least P with a negative oxidation number.

Abstract: A light emitting device includes: a first light-emitting element; a second light-emitting element; a photodetector having a light-receiving surface at an upper face thereof, the light-receiving surface including: a first light-receiving region configured to receive a portion of light emitted from the first light-emitting element, and a second light-receiving region configured to receive a portion of light emitted from the second light-emitting element; and at least one lens member having: at least one incident surface on which a portion of the light emitted from the first light-emitting element and/or a portion of the light emitted from the second light-emitting element are incident, and at least one exiting surface through which the portion of the light incident on the incident surface is emitted. In a top view, the lens member is disposed so as to overlap the upper face of the photodetector in part or in whole.

Abstract: A light emitting module includes a light source, a first lens configured to transmit light from the light source and including at least a portion that is elastically deformable, and an actuator configured to move the first lens in a direction along an optical axis of the first lens. The light source includes a contact portion with which the first lens comes into contact. The actuator is configured to move the first lens to change a state of the first lens relative to the contact portion of the light source.

Abstract: A light-emitting element includes: a semiconductor layered structure including a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type, and an active layer located between the first semiconductor layer and the second semiconductor layer; a reflective portion including an insulative first layer located on the first semiconductor layer, a second layer made of a metal material located on the first layer, and a third layer located on the second layer; an insulative layer covering the reflective portion; a light-transmissive conductive layer located on the insulative layer and on the first semiconductor layer; a first electrode located on a portion of the light-transmissive conductive layer that is above the reflective portion; and a second electrode located on the second semiconductor layer.

Abstract: A light source module includes a substrate having an upper surface; a light source disposed on the upper surface of the substrate; and an optical member including a plurality of light controllers and disposed above the substrate with the light source interposed therebetween. The light source includes a plurality of first light emitting parts and a plurality of second light emitting parts. The plurality of light controllers include a first light controller and a plurality of second light controllers. The first light controller overlaps one or more of the plurality of first light emitting parts in a top view. Each of the plurality of second light controllers overlaps a corresponding one of the plurality of second light emitting parts in the top view.

Abstract: A light emitting element includes: a conductive member having a first through hole; a reflecting layer disposed in the first through hole; an insulation layer disposed on the conductive member and the reflecting layer and having second through holes positioned so as not to overlap the first through hole in a plan view; a semiconductor structure including a p-type semiconductor layer disposed on the insulation layer, an emission layer disposed on the p-type semiconductor layer, and an n-type semiconductor layer disposed on the emission layer in part; an n-electrode disposed on and electrically connected to the n-type semiconductor layer; and p-electrode electrically connected to the conductive member. A reflectance of the reflecting layer for a peak wavelength of light emitted from the emission layer is higher than the reflectance of the conductive member for the peak wavelength of the light emitted from the emission layer.

Abstract: A planar light source has a plurality of light sources, a substrate, and a partitioning member. The partitioning member includes a first member provided with first partitioned parts each having a first bottom part and first oblique parts surrounding the first bottom part that are arranged on the substrate in a matrix, and a second member provided with second partitioned parts each having a second bottom part and second oblique parts surrounding the second bottom part that are arranged on the substrate in a matrix. The first member further has first outer oblique parts overlapping the second oblique parts located along the outer edge of the second member on the first member side. The first bottom parts and the second bottom parts each have a light source disposition opening, and the light sources are individually disposed on the substrate exposed in the light source disposition openings.

Abstract: Provided is a light-emitting device capable of improving discernibility of letters or the like when used by a person with reduced visual sensitivity to blue light. The light-emitting device comprises a light-emitting element emitting light having an emission peak wavelength in a range of 440 nm to 470 nm, and a wavelength conversion member including a plurality of phosphors emitting light when excited by the light from the light emitting element. Ratios of luminous intensities of the light emitted from the light emitting device at wavelengths 480 nm, 530 nm, and 550 nm to the luminous intensity at the peak emission wavelength attributed to the light emitting element in an emission spectrum are 0.05 to 0.20, 0.20 to 0.35, and 0.23 to 0.38, respectively.

Abstract: A light-emitting element includes a semiconductor structure including: an n-type semiconductor layer including a first n-type semiconductor layer and a second n-type semiconductor layer, an active layer, and a p-type semiconductor layer. The active layer is located between the n-type semiconductor layer and the p-type semiconductor layer in a thickness direction. An n-side electrode electrically connected to the n-type semiconductor layer. A p-side electrode electrically connected to the p-type semiconductor layer.

Abstract: A method of manufacturing a light-emitting device according to an aspect of the present disclosure includes: providing a light-emitting device intermediate including a light-emitting element and a covering member intermediate that contains a light reflective material and an alkali metal silicate and covers the light-emitting element; and immersing the covering member intermediate in an aqueous solution containing an alkaline earth metal halide salt to form a covering member containing an alkaline earth metal silicate.

Abstract: A light-emitting device includes A light-emitting device according to one embodiment of the present disclosure includes: a support body including a wall portion, a main surface surrounded by the wall portion, and a recessed portion defined by the wall portion and the main surface; a light-emitting element mounted on the main surface; and a light-transmissive member disposed on the wall portion and the light-emitting element. An upper surface of the light-transmissive member includes a first surface, a second surface surrounded by the first surface in a plan view and protruding upward relative to the first surface in a cross-sectional view, and a third surface having a curved shape and connecting the first surface and the second surface in a cross-sectional view. An upper surface of the wall portion includes a first inclined surface inclined with respect to the main surface. The third surface is located above the first inclined surface.

Abstract: A light emitting device includes: a base member including a mounting surface, a first light-emitting element that is disposed on the mounting surface and emits light passing along a first optical axis, a second light-emitting element that is disposed on the mounting surface and emits light passing along a second optical axis, a third light-emitting element that is disposed on the mounting surface and emits light passing along a third optical axis, and one or more light reflective members including a first light reflective surface that includes a first position to be irradiated with the light passing along the first optical axis, a second light reflective surface that includes a second position to be irradiated with the light passing along the second optical axis and, and a third light reflective surface that includes a third position to be irradiated with the light passing along the third optical axis.

Abstract: The present disclosure relates to a method of increasing an amount of a stilbenoid, and/or one or more compounds selected from the group consisting of TCA cycle metabolites, polyamine alkaloids, 4-aminobutyric acid, abscisic acid and salts thereof in a plant, the method comprising steps of: irradiating the plant, part, crushed material or cultured plant cell with light, wherein a fluence at a wavelength range of 275-295 nm is 50,000-2,500,000 ?mol/m2, while at the same time a fluence at a wavelength range of 200-270 nm is less than 20% of the fluence at the wavelength range of 275-295 nm; and storing the irradiated plant, part, crushed material or cultured plant cell in a dark place for 1 day or more.