LIGHT-EMITTING DEVICE

• Main Author: ICHIKAWA MASATSUGU
• Format: Patent
• Language: English; Japanese
• Published: 28.07.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

To provide a light emitting device capable of improving the extraction efficiency of light emitted from a light emitting element, achieving miniaturization, increasing light emission efficiency, and providing light emission characteristics with suppressed uneven color and uneven brightness.SOLUTION: A light-emitting device includes a covering member including a light-reflecting material, a light-transmitting member having a light-emitting side surface and a light-incident side surface that faces the surface of the covering member and is disposed in the surface, and a light emitting element and a wavelength conversion member that is coupled to the incident area side of the light emitting element and is excited by the light emitting element in a light source portion partially embedded in the covering member and coupled to an incident area surrounded by an outer reflection area on the light incident side surface of the light-transmitting member.SELECTED DRAWING: Figure 1 【課題】発光素子から出射される光の取り出し効率を向上させること、小型化できること、発光効率を高くすること、色むら、輝度むらを抑えた発光特性とすること、が可能な発光装置を提供する。【解決手段】光反射性材料を含有する被覆部材と、発光側の表面と、前記被覆部材の表面に対向し、該表面内に配置された光入射側の表面とを有する光透過部材と、前記光透過部材の光入射側表面において、外側の反射領域に囲まれた入射領域に結合し、前記被覆部材に一部が埋め込まれた光源部に、発光素子と、該発光素子の前記入射領域側に結合され、該発光素子に励起される波長変換部材と、を備える発光装置。【選択図】図１