Light emitting device and method for manufacturing the same
View Patent ↗According to one embodiment, a light emitting device includes a light emitting element, a translucent section, and a light distribution control section. The light emitting element includes a first surface. The first surface emits light. The translucent section is provided on the first surface. The light distribution control section is provided on a periphery of the first surface. The light distribution control section has a lower refractive index than the translucent section.
1. A light emitting device comprising:
a light emitting element including (i) a first surface that emits light and (ii) lateral surfaces extending from the first surface;
a translucent section provided in contact with the first surface; and
a light distribution control section provided on an edge portion of the first surface and having a lower refractive index than a refractive index of the translucent section, the light distribution control section being in contact with the first surface and partially overlapping with the first surface, and the light distribution control section not being in contact with the lateral surfaces;
wherein the light distribution control section is translucent and includes an inclined surface, and the inclined surface is in contact with the first surface, partially overlaps a portion of the first surface, and is inclined such that a tip of the inclined surface of the light distribution control section does not overlap with the first surface.
2. The light-emitting device according to claim 1 , wherein the light distribution control section is provided so as to surround the first surface.
3. The light-emitting device according to claim 1 , wherein the inclined surface includes a curved surface.
4. The light-emitting device according to claim 1 , wherein the translucent section is provided so as to cover the inclined surface.
5. The light-emitting device according to claim 1 , wherein the translucent section includes a translucent material and a phosphor.
6. The light-emitting device according to claim 5 , wherein the phosphor is unevenly distributed on the first surface side inside the translucent section.
7. The light-emitting device according to claim 5 , wherein the phosphor is in contact with the first surface.
8. The light-emitting device according to claim 5 , wherein the phosphor is located only inside a periphery of the first surface.
9. The light-emitting device according to claim 5 , wherein the phosphor is particulate, and a height dimension of the light distribution control section is larger than an average diameter dimension of the phosphor.
10. The light-emitting device according to claim 1 , wherein a height dimension of the light distribution control section is less than or equal to a thickness dimension of the translucent section.
11. The light-emitting device according to claim 1 , wherein the light distribution control section includes a gas in an atmosphere in which the light emitting device is provided.
12. The light-emitting device according to claim 4 , further comprising:
a translucent film between the inclined surface and the translucent section.
13. The light-emitting device according to claim 12 , wherein a refractive index of the translucent film is lower than the refractive index of the translucent section.
14. The light-emitting device according to claim 1 , further comprising:
a reflecting section provided on the lateral surfaces of the light emitting element.
15. The light-emitting device according to claim 1 , wherein the first surface is uneven.
16. The light-emitting device according to claim 1 , wherein a dimension of a cross section of the light distribution control section, in a direction orthogonal to a height direction of the light distribution control section, gradually decreases towards the tip of the inclined surface of the light distribution control section.