LED lamp
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- Osram Sylvania Inc., Danvers, MA, USA
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1108603
- Patent Number(s):
- 8579451
- Application Number:
- 13/233,592
- Assignee:
- Osram Sylvania Inc. (Danvers, MA)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F21 - LIGHTING F21K - NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE
F - MECHANICAL ENGINEERING F21 - LIGHTING F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF
- DOE Contract Number:
- EE0003241
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Galvez, Miguel, Grossman, Kenneth, and Betts, David. LED lamp. United States: N. p., 2013.
Web.
Galvez, Miguel, Grossman, Kenneth, & Betts, David. LED lamp. United States.
Galvez, Miguel, Grossman, Kenneth, and Betts, David. Tue .
"LED lamp". United States. https://www.osti.gov/servlets/purl/1108603.
@article{osti_1108603,
title = {LED lamp},
author = {Galvez, Miguel and Grossman, Kenneth and Betts, David},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {11}
}
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