Light emitting device and a lighting apparatus
US7608862B2 · kind B2 · utility
3Cited by
5References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 1, 2005 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Mar 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8506
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A light emitting device comprises at least two lead wires, a light emitting element that is disposed on an end portion of at least one of said lead wires and connected electrically with the end portion and the other lead wire, and a phosphor that absorbs at least part of the light emitted from said light emitting element and emanates light having different wavelengths from the wavelength of the light emitted from said light emitting element, wherein the excitation spectrum of said phosphor has a flat region in a wavelength range including a primary wavelength of the light from said light emitting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.