Collection optics for led array with offset hemispherical or faceted surfaces
US7819550B2 · kind B2 · utility
5Cited by
111References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2004 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Nov 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An array of LEDs (30) is provided having a lens array (34) for collecting divergent light from each LED (30). Each lens (34) in the array is associated with a respective LED (30) and has a compound shape including a curved surface (40) that may be spherical or may have an offset aspherical shape. The curved surfaces (40) are centered about each side of its associated LED (30). The lens (34) may alternatively include faceted surfaces (46) that approximate the curved lens surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.