Light conditioning for high-brightness white-light illumination sources
US9291327B2 · kind B2 · utility
2Cited by
5References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2010 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jul 6, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In one general aspect, the invention features an illumination source that comprises a housing and a plurality of LED illumination elements that are mounted proximate each other in a central cluster with respect to the housing and leaving a peripheral space around the cluster, with the peripheral space being significantly larger than a separation between the LED illumination elements in the cluster. A transparent housing cover is mounted with respect to the housing in front of an axis of illumination of the LED illumination elements. A tinted transparent housing cover and/or a smoothing LED can also be employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.