Coated diffuser cap for LED illumination device
US9222640B2 · kind B2 · utility
1Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2011 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jul 2, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49885
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides an illumination device. The illumination device comprises a light-emitting diode (LED) device on a substrate, a heat sink and a cap. The heat sink is thermally connected to the LED device. The cap is secured over the substrate and covering the LED device. The cap includes a coating material having diffusion and reflection characteristics, and the coating material is free of being in direct contact with the LED device. The coating material is applied on a first portion of an inner surface of the cap, but not on a second portion of the inner surface of the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.