Rare earth optical elements for LED lamp
US9243777B2 · kind B2 · utility
8Cited by
67References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | May 11, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2211/182
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present disclosure relates to optical elements and coatings comprising rare-earth element (REE) compounds for light wavelength attenuation of light emitting diode (LED) elements and lamps. More particularly, the present disclosure relates to LED elements and lamps comprising wavelength attenuating elements comprising REE compounds having at least a portion of non-crystalline, non-hydrate form, methods of preparing such elements, and LED elements, LED arrays, LED packages, optical elements, lamps and systems made with same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.