Abstract: A surface light source includes: a light guide plate having an upper surface and a lower surface located opposite the upper surface, and comprising at least one through hole extending from the upper surface to the lower surface; a wiring substrate located on a lower surface side of the light guide plate and comprising a wiring layer; and at least one light source comprising a light-emitting element electrically connected to the wiring layer of the wiring substrate. The light source is located inside the through hole. The upper surface of the light guide plate has a first region including a plurality of protruding portions or depressed portions. In a plan view, a proportion of an area of the protruding portions or depressed portions per unit area of the first region increases among concentric parts of the first region in the direction away from the light source.

Abstract: A light-emitting device includes a wiring board, a plurality of light-emitting elements disposed on the wiring board, a light-reflecting member covering a lateral surface of each of the plurality of light-emitting elements, a plurality of light-transmitting layers each located above an emission surface of a corresponding one of the plurality of light-emitting elements, a plurality of light-reflecting layers disposed on the plurality of light-transmitting layers, respectively, a light-diffusing layer disposed above the plurality of light-reflecting layers and the light-reflecting member, and a low-refractive-index layer located between the light-reflecting member and the light-diffusing layer, around each pair of one of the plurality of light-transmitting layers and one of the light-reflecting layers, and having a refractive index lower than that of the plurality of light-transmitting layers.

Abstract: To provide a construction machine that can improve the energy efficiency in a leveling operation in which an arm crowding operation and a boom raising operation are performed simultaneously.

Abstract: A display device includes a light-emitting module and a light-diffusing sheet stacked body. The light-emitting module includes at least one light guide plate including an upper surface and a lower surface, and light sources disposed at the lower surface side of the light guide plate. The light-diffusing sheet stacked body includes a first light-diffusing sheet disposed on the light guide plate, a second light-diffusing sheet disposed on the first light-diffusing sheet, and a third light-diffusing sheet disposed on the second light-diffusing sheet. The first light-diffusing sheet includes first protrusions at an upper surface side thereof. The second light-diffusing sheet includes second protrusions at an upper surface side thereof. The third light-diffusing sheet includes third protrusions at an upper surface side thereof. A shape of the third protrusion may be different from a shape of the first protrusions and/or a shape of the second protrusions.

Abstract: Provided is a construction machine capable of driving each hydraulic actuator at a suitable speed while suppressing delivery flow rate of a hydraulic pump, both at a single operation time of driving each hydraulic actuator respectively singularly and at a combined operation time of simultaneously driving a plurality of hydraulic actuators.

Abstract: To provide a construction machine that can improve the energy efficiency in a leveling operation in which an arm crowding operation and a boom raising operation are performed simultaneously.

Abstract: A method of manufacturing a light emitting module according to the present disclosure includes: preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface; respectively providing light emitting elements on the second main surface so as to correspond to each of a plurality of optically functional portions provided on the first main surface of the light guide plate; and forming wires electrically connecting the plurality of light emitting elements.

Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.

Abstract: A light-emitting module includes a light-guiding plate having an upper surface with a first hole and having a rectangular shape in a top view, and a light-emitting element opposite to the first hole and disposed opposite to the upper surface. The first hole includes a first portion and a second portion between the first portion and the upper surface. The first portion is provided with a first opening at a boundary between the first portion and the second portion and a first lateral surface inclined with respect to the upper surface. A shape of the first opening in the top view is defined by a first axis parallel to a short side of the rectangular shape of the light-guiding plate and a second axis parallel to a long side of the rectangular shape and shorter than the first axis in a plan view.

Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; a resin member arranged between the plurality of wavelength conversion members and covering lateral surfaces of the plurality of wavelength conversion members; and a lightguide plate having a first primary surface and a second primary surface, and arranged on the resin member and the plurality of wavelength conversion members so that the second primary surface faces the resin member and the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions on the second primary surface that are located over the plurality of wavelength conversion members.

Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.

Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.

Abstract: A light-emitting module includes: a light guide plate having a first surface on which a plurality of first recesses arranged in rows and columns and a grid-shaped groove portion surrounding each of the plurality of first recesses are provided, and a second surface located on the opposite side from the first surface; a plurality of light-emitting elements each disposed inside a corresponding one of the plurality of first recesses; a first light transmission member disposed inside the groove portion of the light guide plate, and having a refractive index lower than a refractive index of the light guide plate; and a reflective resin layer covering the first surface of the light guide plate and the first light transmission member.

Abstract: A light emitting module includes: a plurality of light emitting elements each having a primary light emitting surface and a lateral surface; a plurality of wavelength conversion members arranged respectively on the primary light emitting surfaces of the plurality of light emitting elements; and a lightguide plate having a first primary surface and a second primary surface and arranged continuously on the plurality of wavelength conversion members so that the second primary surface faces the plurality of wavelength conversion members, wherein the lightguide plate includes a plurality of recessed portions located on the second primary surface, and a lateral surface of at least one of the plurality of wavelength conversion members is partially in contact with an inner lateral surface of at least one of the plurality of recessed portions.

Abstract: A light emitting module according to one embodiment of the present disclosure includes a lightguide plate having an upper surface in which a first hole is defined, and a lower surface opposite to the upper surface; and a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole. The upper surface of the lightguide plate includes a first region defining a plurality of protrusions and/or recesses. A ratio of an area occupied by the plurality of protrusions and/or recesses per unit area in a plan view increases concentrically in an outward direction from the light emitting element.

Abstract: A light-emitting module includes a light-guiding plate having an upper surface with a first hole and having a rectangular shape in a top view, and a light-emitting element opposite to the first hole and disposed opposite to the upper surface. The first hole includes a first portion and a second portion between the first portion and the upper surface. The first portion is provided with a first opening at a boundary between the first portion and the second portion and a first lateral surface inclined with respect to the upper surface. A shape of the first opening in the top view is defined by a first axis parallel to a short side of the rectangular shape of the light-guiding plate and a second axis parallel to a long side of the rectangular shape and shorter than the first axis in a plan view.

Abstract: A light emitting module according to one embodiment of the present disclosure includes a lightguide plate having an upper surface in which a first hole is defined, and a lower surface opposite to the upper surface; and a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole. The upper surface of the lightguide plate includes a first region defining a plurality of protrusions and/or recesses. A ratio of an area occupied by the plurality of protrusions and/or recesses per unit area in a plan view increases concentrically in an outward direction from the light emitting element.

Abstract: A light emitting device includes a resin package having a rectangular shape in a top view and two short-side lateral surfaces and two long-side lateral surfaces. The two short-side lateral surfaces include a first external surface and a second external surface located on an opposite side from the first external surface. The two long-side lateral surfaces include a third external surface and a fourth external lateral surface located on an opposite side from the third external lateral surface. The lead is not exposed on the third external lateral surface nor the fourth external lateral surface. The first lead is exposed at the first external lateral surface and the second external lateral surface, respectively flush with the resin member at the first external lateral surface and the second external lateral surface. The second lead is exposed at the second external lateral surface, flush with the resin part at the second external lateral surface.

Abstract: A method of manufacturing a light emitting module according to the present disclosure includes: preparing a light guide plate that comprises a first main surface serving as a light-emitting surface and a second main surface opposite to the first main surface; respectively providing light emitting elements on the second main surface so as to correspond to each of a plurality of optically functional portions provided on the first main surface of the light guide plate; and forming wires electrically connecting the plurality of light emitting elements.

Abstract: A light emitting module includes: a lightguide plate having an upper surface and a lower surface opposite to the upper surface, the upper surface including a first hole; a light emitting element on a lower surface side of the lightguide plate, the light emitting element facing the first hole; and a reflective resin layer, wherein the first hole includes a first portion and a second portion, the first portion includes a first lateral surface sloping with respect to the upper surface, the second portion has a second lateral surface sloping with respect to the upper surface, the second lateral surface being present between an opening in the upper surface and the first lateral surface of the first portion, and the reflective resin layer is located in the first portion of the first hole.