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Title: High efficiency light source using solid-state emitter and down-conversion material

Abstract

A light emitting apparatus includes a source of light for emitting light; a down conversion material receiving the emitted light, and converting the emitted light into transmitted light and backward transmitted light; and an optic device configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device. The source of light is a semiconductor light emitting diode, a laser diode (LD), or a resonant cavity light emitting diode (RCLED). The down conversion material includes one of phosphor or other material for absorbing light in one spectral region and emitting light in another spectral region. The optic device, or lens, includes light transmissive material.

Inventors:
 [1];  [2];  [2]
  1. Clifton Park, NY
  2. Troy, NY
Issue Date:
Research Org.:
Rensselaer Polytechnic Institute (Troy, NY)
Sponsoring Org.:
USDOE
OSTI Identifier:
1016021
Patent Number(s):
7819549
Application Number:
10/583,105
Assignee:
Rensselaer Polytechnic Institute (Troy, NY)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
F - MECHANICAL ENGINEERING F21 - LIGHTING F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
DOE Contract Number:  
FC26-01NT41203
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Narendran, Nadarajah, Gu, Yimin, and Freyssinier, Jean Paul. High efficiency light source using solid-state emitter and down-conversion material. United States: N. p., 2010. Web.
Narendran, Nadarajah, Gu, Yimin, & Freyssinier, Jean Paul. High efficiency light source using solid-state emitter and down-conversion material. United States.
Narendran, Nadarajah, Gu, Yimin, and Freyssinier, Jean Paul. Tue . "High efficiency light source using solid-state emitter and down-conversion material". United States. https://www.osti.gov/servlets/purl/1016021.
@article{osti_1016021,
title = {High efficiency light source using solid-state emitter and down-conversion material},
author = {Narendran, Nadarajah and Gu, Yimin and Freyssinier, Jean Paul},
abstractNote = {A light emitting apparatus includes a source of light for emitting light; a down conversion material receiving the emitted light, and converting the emitted light into transmitted light and backward transmitted light; and an optic device configured to receive the backward transmitted light and transfer the backward transmitted light outside of the optic device. The source of light is a semiconductor light emitting diode, a laser diode (LD), or a resonant cavity light emitting diode (RCLED). The down conversion material includes one of phosphor or other material for absorbing light in one spectral region and emitting light in another spectral region. The optic device, or lens, includes light transmissive material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {10}
}

Patent:

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Works referenced in this record:

Solid-state lighting: failure analysis of white LEDs
journal, August 2004


Strongly Enhanced Phosphor Efficiency in GaInN White Light-Emitting Diodes Using Remote Phosphor Configuration and Diffuse Reflector Cup
journal, April 2005


High-brightness AlGaInP light emitting diodes
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Optical Simulation of Light Source Devices Composed of Blue LEDs and YAG Phosphor
journal, January 2003


Effects of Localized Heat Generations Due to the Color Conversion in Phosphor Particles and Layers of High Brightness Light Emitting Diodes
conference, January 2009

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Prediction of light extraction efficiency of LEDs by ray trace simulation
conference, January 2004