Nanocrystalline based phosphors and photonic structures for solid state lighting
US6734465B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2002 |
| Grant date | May 11, 2004 |
| Priority date | — |
| Expiry date | Nov 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/84
Abstract
A photonic structure for “white” light generation by phosphors under the excitation of a LED. The photonic structure mounts the LED and an optically transparent matrix having dispersed therein phosphors which will emit light under the excitation of the radiation of the LED. The transparent matrix may include nanoparticles for matching the index of refraction of the material of the matrix to that of the light generating phosphors. The matrix material may be readily formed by molding and formed into a variety of shapes including lenses for focusing the emitted light. A large number of the photonic structures may be arranged on a substrate to provide even illumination or other purposes. The phosphors dispersed in the matrix are preferably nanocrystalline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.