Abstract: A light emitting device includes: a wiring substrate including: a substrate, and a first wiring and a second wiring disposed on the substrate; a light emitting element located above the wiring substrate and including a first electrode and a second electrode; a first conductive member connecting the first wiring and the first electrode; and a second conductive member connecting the second wiring and the second electrode. An outer lateral surface of the first conductive member protrudes outward from a straight line that connects an outer end of the first wiring and an outer end of the first electrode in a cross-sectional view.

Abstract: A light emitting device includes: a semiconductor laser element that has an upper face and a light emitting face, the semiconductor laser element including a first waveguide and a second waveguide, wherein the first and second waveguides extend along a direction perpendicular to the light-emitting face in a top view; and a plurality of wires, each having a first end connected to the upper face of the semiconductor laser element at a connection position, wherein a quantity of the wires that is connected to the upper face of the semiconductor laser element is in a range of two to five, inclusive. In the top view, a quantity of the wires whose connection positions are located in a region overlapping the first waveguide is zero, and a quantity of the wires whose connection positions are located in a region overlapping the second waveguide is zero.

Abstract: An ultraviolet light fluid treatment device includes an inlet, an outlet, a primary conduit, a secondary conduit, and a light source. The primary conduit connects the inlet and the outlet. The secondary conduit branches off the primary conduit at a first location of the primary conduit and merged with the primary conduit at a second location of the primary conduit. The light source is disposed between the primary conduit and the secondary conduit and configured to emit ultraviolet light, with which a region in the primary conduit is irradiated. A cross-sectional area in the primary conduit orthogonal to a first flow direction of a fluid in the primary conduit at the first location is greater than a cross-sectional area in the secondary conduit orthogonal to a second flow direction of the fluid in the secondary conduit at the first location.

Abstract: An image display method using an image display device is provided. The method includes performing a first operation to cause light to be emitted from light-emitting regions of a backlight at respective intensity in accordance with frame image data, sequentially with respect to each of first areas of the backlight, and performing a second operation to apply voltages to pixels of a liquid crystal panel at respective levels in accordance with the frame image data, sequentially with respect to each of second areas of the liquid crystal panel. Light-emitting regions in each of the first areas are repeatedly turned on and off a plurality of times during the first operation thereof.

Abstract: A lighting device includes a light source, a lens receiving light from the light source, and a reflector including multiple first reflecting regions, wherein each first reflecting region reflects light from the lens in a first direction crossing an optical axis of light incident on the lens. The first reflecting regions are arranged with steps interposed therebetween so that the regions further toward a light-emitting side of the reflector in the first direction have greater distances from the lens in a second direction in which the optical axis extends. A light distribution angle of light from a first part of the lens further toward the light-emitting side than the optical axis in the first direction is less than a light distribution angle of light from a second part of the lens further toward a side opposite to the light-emitting side than the optical axis in the first direction.

Abstract: A laser device includes: a traveling wave type resonator comprising a first mirror and a second mirror; and a laser medium disposed between the first mirror and the second mirror. The first mirror and the second mirror are disposed such that round-trip light that travels in round trips in the resonator has a focus inside the laser medium. The laser device is configured such that: excitation light incident on the resonator is superimposed on the round-trip light at the focus and narrowed to be thinner than the round-trip light, ZR×?<0.5 is satisfied, where ZR is a Rayleigh length of the excitation light and ? is an absorption coefficient of the laser medium with respect to the excitation light, and a round-trip Gouy phase shift of the resonator has a value excluding 2?×n/m where m is an integer of less than 15 and n is an integer of equal to or less than m.

Abstract: A method for manufacturing a light-emitting element includes: forming a semiconductor structure comprising a light-emitting layer on a first surface of a substrate, wherein the first surface comprising a plurality of protrusions and a second region; dividing the semiconductor structure into a plurality of light-emitting portions by removing a portion of the semiconductor structure so as to form an exposed region of the substrate, wherein the second region is exposed from under the semiconductor structure in the exposed region; bonding a light-transmitting body to a second surface of the substrate that is opposite the first surface so as to form a bonded body, wherein the light-transmitting body comprises a fluorescer; forming a plurality of modified regions along the exposed region; removing a portion of the light-transmitting body that overlaps the plurality of modified regions in a plan view; and singulating the bonded body along the modified regions.

Abstract: A light source device includes: a plurality of light source parts configured to emit light. Each of the light source parts comprises a light-emitting element and a light guiding member. the plurality of light-emitting elements are configured to emit light passing through the light guiding members from the light source parts in an array in an irradiated region. One or more of the plurality of light source parts are arranged in a placement region in a different arrangement from an arrangement of the light in the irradiated region.

Abstract: A method of producing a positive electrode active material for a nonaqueous electrolyte secondary battery, the method includes preparing nickel-containing composite oxide particles having a ratio 1D90/1D10 of a 90% particle size 1D90 to a 10% particle size 1D10 in volume-based cumulative particle size distribution of 3 or less; obtaining a raw material mixture containing the composite oxide particles and a lithium compound and having a ratio of a total number of moles of lithium to a total number of moles of metal elements contained in the composite oxide in a range of 1 to 1.3; subjecting the raw material mixture to a heat treatment to obtain a heat-treated material; subjecting the heat-treated material to a dry-dispersion treatment to obtain a first dispersion; and bringing the first dispersion into contact with a liquid medium to obtain a second dispersion.

Abstract: A method includes generating luminance setting data, luminance estimation data, maximum luminance data, and gradation setting data, and controlling a backlight panel and a liquid crystal panel based on the luminance setting data and the gradation setting data, respectively. The luminance setting data sets a luminance value for each light-emitting region of the backlight panel and is generated based on an input image. The luminance estimation data indicates an estimated luminance value of backlight for the input image with respect to each pixel of the liquid crystal panel and is generated based on the luminance setting data and luminance profile data. The maximum luminance data is generated based on the luminance estimation data. The gradation setting data sets a gradation value of each pixel of the liquid crystal panel for the input image, and is generated based on the input image, the luminance estimation data, and the maximum luminance data.

Abstract: A light emitting device includes a light emitting element, a light guide member, a reflecting member, a wavelength conversion member. The light emitting element has a light emitting surface and lateral surfaces. The light guiding member is provided on at least a portion of the lateral surfaces of the light emitting element. The reflecting member is provided on the lateral surface of the light emitting element with the light guiding member interposed therebetween. The wavelength conversion member is provided on the light emitting surface of the light emitting element, the light guiding member and the reflecting member. The wavelength conversion member is provided with a recess between an outer lateral surface of the wavelength conversion member and the light guiding member. The reflecting member is provided in the recess.

Abstract: A light-emitting module includes a first terminal, a second terminal, a first light source, a second light source, and a third light source. The first light source is connected between the first terminal and the second terminal. The second light source and the third light source are connected between the first terminal and the second terminal, in anti-parallel with the first light source. The first, second, and third light sources are aligned in a first direction along a light-emitting surface, with the first light source between the second light source and the third light source.

Abstract: A method of manufacturing a light emitting device includes: providing a light emitting element comprising: a semiconductor laminate having a first surface, a second surface, and a lateral surface between the first and second surfaces, and an electrode disposed at the second surface; disposing a resin layer in an A-stage state on a support; placing the light emitting element on an upper surface of the resin layer while the upper surface of the resin layer and the first surface of the semiconductor laminate face each other; heating the resin layer at a first temperature to reduce a viscosity of the resin layer and causing the light emitting element to sink due to its own weight such that the second surface of the semiconductor laminate is exposed; and curing the resin layer by heating the resin layer at a second temperature higher than the first temperature, thereby forming a resin member.

Abstract: A light emitting device includes a light emitting element having an upper emission face, a lower face and a lateral face(s); a reflecting member having an upper face, a lower face and inner and outer lateral faces, wherein the inner lateral face(s) is disposed on the lateral face side of the light emitting element; a wavelength conversion member having an upper emission face, a lower face and a lateral face(s), wherein the lower face is disposed on the upper emission face of the light emitting element and on the upper face of reflecting member; and a cover member having inner and outer lateral faces, wherein the inner lateral face(s) completely covers the lateral face(s) of the wavelength conversion member. The cover member contains a reflecting substance and a coloring substance, and the body color of the wavelength conversion member and body color of the cover member are the same or similar in color.

Abstract: An image display method includes generating luminance data, applying a special filter to the luminance data, generating luminance setting data, generating gradation setting data, and controlling a backlight based on the luminance setting data and a liquid crystal panel based on the gradation setting data. The luminance data indicates a luminance value for each of light-emitting regions of the backlight based on a maximum gradation value among gradation values of image pixels of an input image that correspond to the light-emitting region. The special filter is applied such that, with respect to each light-emitting region, a difference of the luminance value thereof from the luminance values of neighboring light-emitting regions decreases, and the luminance setting data is generated therefrom. The gradation setting data sets a gradation value of each pixel of the liquid crystal panel, and is generated based on the input image and the luminance setting data.

Abstract: An image display method using an image display device is provided. The method includes performing a first operation to cause light to be emitted from light-emitting regions of a backlight at respective intensity in accordance with frame image data, sequentially with respect to each of first areas of the backlight, and performing a second operation to apply voltages to pixels of a liquid crystal panel at respective levels in accordance with the frame image data, sequentially with respect to each of second areas of the liquid crystal panel. Light-emitting regions in each of the first areas are repeatedly turned on and off a plurality of times during the first operation thereof.

Abstract: A light-emitting unit includes: a wiring board; light-emitting elements on the wiring board; a light reflecting member on the wiring board, the light reflecting member covering a lateral surface of each of the light-emitting elements; wavelength conversion layers each provided on or above an emission surface of a corresponding one of the plurality of light-emitting elements; light reflecting layers on the wavelength conversion layers, respectively; and a protecting layer configured to transmit light and provided on the light reflecting member. The light-transmitting protecting layer covers at least a lateral surface of the wavelength conversion layers and at least a lateral surfaces of the light reflecting layers. An upper surface of the protecting layer has a first recess in a region where the plurality of light reflecting layers are not present in a top view. The first recess includes at least one concave surface.

Abstract: A light-emitting device includes a base member, a plurality of light sources on or above an upper surface of the base member, and a reflector that comprises a plurality of surrounding portions. Each of the plurality of surrounding portions surrounds a respective one of the plurality of light sources in a plan view. Each of the plurality of surrounding portions has inclined lateral surfaces widened upward. Intervals between adjacent ones of the plurality of light sources are constant in the plan view. Upper peripheries of the inclined lateral surfaces of each of the plurality of surrounding portions define an opening having a substantially rectangular shape. The plurality of surrounding portions include a plurality of first surrounding portions and a plurality of second surrounding portions surrounding the plurality of first surrounding portions.

Abstract: In an image display method, a backlight is divided into first areas in a first direction. Each of the first areas includes light-emitting regions. A liquid crystal panel is divided into second areas in the first direction. In the method, a first operation to cause light to be emitted from the light-emitting regions at respective intensity in accordance with frame image data is performed sequentially with respect to each of the first areas. Further, a second operation to apply voltages to the pixels at respective levels in accordance with the frame image data is performed sequentially with respect to each of the second areas. A timing at which the first operation with respect to each of the first areas is started is delayed from a timing at which the second operation with respect to a corresponding one of the second areas is started by a predetermined interval.

Abstract: A method for producing a resin part includes: preparing an intermediate body comprising a first member and a second member, the first member containing a resin; and welding the first member with the second member by performing scanning of the intermediate body with a first laser beam and a second laser beam. In the welding of the first member with the second member, the scanning with the first laser beam and the second laser beam is performed in a state in which a center of a second spot is located on a rear side in a direction of the scanning with the first laser beam and the second laser beam as compared to a center of a first spot while at least a part of the first spot and at least a part of the second spot overlap with each other.