Multi-chip light emitting device lamps for providing high-CRI warm white light and light fixtures including the same
US8076835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2007 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Aug 22, 2028 |
Classification
- Technology area (CPC —)General
Abstract
A multi-chip lighting emitting device (LED) lamp for providing white light includes a submount including first and second die mounting regions thereon. A first LED chip is mounted on the first die mounting region, and a second LED chip is mounted on the second die mounting region. The LED lamp is configured to emit light having a spectral distribution including at least four different color peaks to provide the white light. For example, a first conversion material may at least partially cover the first LED chip, and may be configured to absorb at least some of the light of the first color and re-emit light of a third color. In addition, a second conversion material may at least partially cover the first and/or second LED chips, and may be configured to absorb at least some of the light of the first and/or second colors and re-emit light of a fourth color. Related light fixtures and methods are also discussed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.