Materials and lightguides for color filtering in lighting units
US10191204B2 · kind B2 · utility
0Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2015 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Jan 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0095
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Materials and lightguides formed thereof that are suitable for use in lighting units to impart a color filtering effect to visible light. At least a portion of such a lightguide (16) is formed of a composite material comprising a polymeric matrix material and an inorganic particulate material that contributes a color filtering effect to visible light passing through the composite material, and the particulate material comprises a neodymium compound containing Nd3+ ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.