Abstract: A white light emitting device includes: first light-emitting units to which a first current is applied; and second light-emitting units to which a second current which is different from the first current is applied. When the first current is applied to the first light-emitting units and the second current is applied to the second light-emitting units, an average emission chromaticity of the first light-emitting units and an average emission chromaticity of the second light-emitting units are identical colors. When the same current is applied to both the first light-emitting units and the second light-emitting units, the average emission chromaticity of the first light-emitting units and the average emission chromaticity of the second light-emitting units are non-identical colors.

Abstract: A white light emitting device includes: first light-emitting units to which a first current is applied; and second light-emitting units to which a second current which is different from the first current is applied. When the first current is applied to the first light-emitting units and the second current is applied to the second light-emitting units, an average emission chromaticity of the first light-emitting units and an average emission chromaticity of the second light-emitting units are identical colors. When the same current is applied to both the first light-emitting units and the second light-emitting units, the average emission chromaticity of the first light-emitting units and the average emission chromaticity of the second light-emitting units are non-identical colors.

Abstract: A light emitting device includes a light emitting element; a sub-mount including a sub-mount substrate with a front surface on which the light emitting element is disposed, and a back surface electrode disposed in a back surface that is on a back side of the front surface of the sub-mount substrate; a main-mount in which the sub-mount is disposed, the main-mount including a front surface metal pattern including a wiring electrode bonded to the back surface electrode via solder. The front surface metal pattern has a slit, in a plan view, at a position away from a disposition region in which the sub-mount is disposed.

Abstract: A light emitting device includes a light emitting element; a sub-mount including a sub-mount substrate with a front surface on which the light emitting element is disposed, and a back surface electrode disposed in a back surface that is on a back side of the front surface of the sub-mount substrate; a main-mount in which the sub-mount is disposed, the main-mount including a front surface metal pattern including a wiring electrode bonded to the back surface electrode via solder. The front surface metal pattern has a slit, in a plan view, at a position away from a disposition region in which the sub-mount is disposed.

Abstract: A light-emitting device includes a light-emitting element 110; and a lens section 132 covering over the light-emitting element 110. The lens section 132 includes an entrance surface S1 on which light from the light-emitting element 110 is incident; an exit surface S2 from which the light incident on the entrance surface S1 is emitted; and an optical axis L extending so as to penetrate the entrance surface S1 and the exit surface S2. A concave section 132a is formed in an area of the exit surface S2, which contains the optical axis L, and two flat sections 132b are formed so as to face each other across the optical axis L. The exit surface S2 defines an upwardly-protruding curved surface formed between the two flat sections 132b, and the optical axis L is coincidence with a reference optical axis of the light-emitting element 110.

Abstract: A light emitting device includes a board 112 and a light-emitting element 110 fixed onto the board and having a light emission region facing upward. The board includes a plurality of projections 125 and 126 spaced from one another and each surrounding the light-emitting element 110. A side surface of each of the projections facing the light-emitting element is a reflective surface 125A, 126A that reflects light emitted sideways from the light emission region. The reflective surfaces are concentric about the light-emitting element. Upper ends of the reflective surfaces are located higher with increasing distance from the light-emitting element.

Abstract: A light emitting device includes: a light-emitting element 110 fixed onto a board 112 and having a light emission region that faces upward; and a light-control lens 114 located above the light-emitting element 110 and having an optical axis L that coincides with an optical axis of the light emission region. The light-control lens 114 includes a recess 141a located around the optical axis L, a first reflective surface that is located in the recess 141a and totally reflects light incident from the light emission region in a direction away from the optical axis L, and a first refractive surface that is located outside the first reflective surface in the recess 141a and refracts light incident from the light emission region at an emission angle larger than an incident angle of the light.

Abstract: To provide a light emitting device which emits high-luminance, uniform white light with reduced variations in luminance, a light emitting element 101 is mounted on a substrate 105 and covered with a wavelength conversion layer 106 of uniform thickness, and then a light scattering layer 107 made of a translucent resin containing a light reflecting material is formed. As the light scattering layer 107, a high density region 109 in which a density of the light reflecting material is high is formed immediately above a central part of a light emitting surface of the light emitting element 101, and a low density region 110 in which the density of the light reflecting material is low is formed around a region immediately above the central part of the light emitting surface of the light emitting element. A translucent resin layer 108 is formed on the light scattering layer 107.

Abstract: A light emitting device includes a light emitting element mounted on a lead frame which is a base; and a photochromic lens sealing the light emitting element. The light emitting element is in a rectangular parallelepiped shape and has a rectangular upper surface. The photochromic lens has a circular lower surface and has, at a side surface, a convex lens part inwardly inclined from bottom to top. Two flat parts are formed at the side surface by cutting off the photochromic lens in parallel with a long side of the upper surface of the light emitting element.