Abstract: To provide a light-emitting diode in which cracking or peeling of interlayer insulating film is suppressed. The first interlayer insulating film is continuously formed in a film on a DBR layer, a first p-electrode, and a first n-electrode. The first interlayer insulating film is a multilayer formed by alternately depositing a SiO2 layer and a TiO2 layer, and the number of layers is eleven. The SiO2 layer is formed of a material having a property of generating compressive stress. When the light-emitting diode according to the first embodiment is exposed to a high temperature, the TiO2 layer in the first interlayer insulating film changes its property from generating compressive stress to generating tensile stress. The tensile stress by the TiO2 layer and the compressive stress by the SiO2 layer counteract each other. As a result, the internal stress of the first interlayer insulating film is relaxed.

Abstract: A Group III nitride compound semiconductor light-emitting element has a reflecting surface on a side opposite to a main light-emitting surface of the element viewed from a light-emitting layer. The reflecting surface is inclined to surfaces of growth of semiconductor layers. Light emitted from the light-emitting layer is reflected by the reflecting surface, so that the reflected light emerges from side surfaces of the light-emitting element to the outside without passing through the semiconductor layers (particularly, the light-emitting layer).

Abstract: A light source device has a light shielding member having an aperture, a light source arranged on one side of the light shielding member, and a converging member arranged relatively with respect to the light source and the light source to thereby converge light emitted from the light source in the aperture or in a vicinity of the aperture. Another type of light source device has a single light source, and a converging member for converging light from the light source to thereby distribute the light to at least two points. Still another type of light source device has a light source, and a reflecting mirror arranged to enclose a side of a light emission direction of the light source, the reflecting mirror reflecting light emitted from the light source in a direction except the light source so that the light is radiated outside.

Abstract: A light-emitting element is mounted in a cup-like portion formed on a substrate and a case. The cup-like portion is filled with a sealing member made of a light-transmissible resin. A layer made of a material having a refractive index lower than that of the sealing member is provided between the sealing member and a surface of the case.

Abstract: A light source device has a light shielding member having an aperture, a light source arranged on one side of the light shielding member, and a converging member arranged relatively with respect to the light source and the light source to thereby converge light emitted from the light source in the aperture or in a vicinity of the aperture. Another type of light source device has a single light source, and a converging member for converging light from the light source to thereby distribute the light to at least two points. Still another type of light source device has a light source, and a reflecting mirror arranged to enclose a side of a light emission direction of the light source, the reflecting mirror reflecting light emitted from the light source in a direction except the light source so that the light is radiated outside.

Abstract: A Group III nitride compound semiconductor light-emitting element has a reflecting surface on a side opposite to a main light-emitting surface of the element viewed from a light-emitting layer. The reflecting surface is inclined to surfaces of growth of semiconductor layers. Light emitted from the light-emitting layer is reflected by the reflecting surface, so that the reflected light emerges from side surfaces of the light-emitting element to the outside without passing through the semiconductor layers (particularly, the light-emitting layer).

Abstract: A light source device has a light shielding member having an aperture, a light source arranged on one side of the light shielding member, and a converging member arranged relatively with respect to the light source and the light source to thereby converge light emitted from the light source in the aperture or in a vicinity of the aperture. Another type of light source device has a single light source, and a converging member for converging light from the light source to thereby distribute the light to at least two points. Still another type of light source device has a light source, and a reflecting mirror arranged to enclose a side of a light emission direction of the light source, the reflecting mirror reflecting light emitted from the light source in a direction except the light source so that the light is radiated outside.

Abstract: A light-emitting element is mounted in a cup-like portion formed on a substrate and a case. The cup-like portion is filled with a sealing member made of a light-transmissible resin. A layer made of a material having a refractive index lower than that of the sealing member is provided between the sealing member and a surface of the case.

Abstract: A light source device has a light shielding member having an aperture, a light source arranged on one side of the light shielding member, and a converging member arranged relatively with respect to the light source and the light source to thereby converge light emitted from the light source in the aperture or in a vicinity of the aperture. Another type of light source device has a single light source, and a converging member for converging light from the light source to thereby distribute the light to at least two points. Still another type of light source device has a light source, and a reflecting mirror arranged to enclose a side of a light emission direction of thelightsource, the reflecting mirror reflecting light emitted from the light source in a direction except the light source so that the light is radiated outside.