Bulb for light-emitting diode with color-converting insert
US7686478B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2008 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | May 14, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bulb is adapted to fit over a light-emitting diode emitting a light of a first hue. The bulb is composed of a light-transmitting material and defines an inner cavity. The bulb includes a color-converting insert that is positioned in the inner cavity. The color-converting insert is also composed of a light-transmitting material and includes a light color-converting material. The light-emitting diode emits light of the first hue into the color-converting insert, which converts the light of the first hue into light of a desired hue, which is then emitted into the bulb and ultimately observed over a light-emitting surface of the bulb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.