LED lamp
There is herein described a lamp for providing white light comprising a plurality of light sources positioned on a substrate. Each of said light sources comprises a blue light emitting diode (LED) and a dome that substantially covers said LED. A first portion of said blue light from said LEDs is transmitted through said domes and a second portion of said blue light is converted into a red light by a first phosphor contained in said domes. A cover is disposed over all of said light sources that transmits at least a portion of said red and blue light emitted by said light sources. The cover contains a second phosphor that emits a yellow light in response to said blue light. The red, blue and yellow light combining to form the white light and the white light having a color rendering index (CRI) of at least about 80.
- Research Organization:
- Osram Sylvania Inc., Danvers, MA, USA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0003241
- Assignee:
- Osram Sylvania Inc. (Danvers, MA)
- Patent Number(s):
- 8,579,451
- Application Number:
- 13/233,592
- OSTI ID:
- 1108603
- Country of Publication:
- United States
- Language:
- English
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