Light emitting devices with high light collimation
US7098589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Jan 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/872
Abstract
Light-emitting devices, and related components, systems and methods are disclosed. The light-emitting device can include a multi-layer stack of materials and a support. The multi-layer stack of materials can include a light-generating region and a first layer supported by the light-generating. Thee light-generating region can be between the first layer and the support. The surface of the first layer can be configured so that light generated by the light-generating region can emerge from the light-emitting device via the surface of the first layer. The surface of the first layer can have a dielectric function that varies spatially according to a pattern. The pattern can be formed of holes in the surface of the first layer. The pattern is configured so that light generated by the light-generating region that emerges from the light-emitting device via the surface of the first layer is more collimated than a Lambertian distribution of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.