LED-based illumination modules with PTFE color converting surfaces
US8297767B2 · kind B2 · utility
8Cited by
15References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 2011 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Aug 31, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination module includes a plurality of Light Emitting Diodes (LEDs) and a light conversion sub-assembly mounted near but physically separated from the LEDs. The light conversion sub-assembly includes at least a portion that is a polytetrafluoroethylene (PTFE) material that also includes a wavelength converting material. Despite being less reflective than other materials that may be used in the light conversion sub-assembly, the PTFE material unexpectedly produces an increase in luminous output, compared to other more reflective materials, when the PTFE material includes a wavelength converting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.