Solid state lighting device with reduced form factor including LED with directional emission and package with microoptics
US6998281B2 · kind B2 · utility
36Cited by
32References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Mar 31, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/882
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A light emitting device containing an array of directional emission LEDs is provided. The directional emission LEDs of the array may be substrate emitting, lateral current injection, resonant cavity LEDs mounted in a flip-chip configuration. Each LED may emit a different color of light, such that the output of the array appears white to an observer. The LED array package may contain microoptical elements, such as a diffraction grating or microprisms, integrated into the light emitting surface of the package. The microoptical elements are used to mix the light beams emitted by individual LEDs in the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.