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

Patent ·
OSTI ID:1016021
 [1];  [2];  [2]
  1. Clifton Park, NY
  2. Troy, NY
+ Show Author Affiliations

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.

Research Organization:
Rensselaer Polytechnic Institute (Troy, NY)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-01NT41203
Assignee:
Rensselaer Polytechnic Institute (Troy, NY)
Patent Number(s):
7,819,549
Application Number:
10/583,105
OSTI ID:
1016021
Country of Publication:
United States
Language:
English

References (8)

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 journal January 1997
Study of photon extraction efficiency in InGaN light-emitting diodes depending on chip structures and chip-mount schemes journal January 2006
High-Power III-Nitride Emitters for Solid-State Lighting journal August 2002
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
  • Arik, Mehmet; Weaver, Stanton; Becker, Charles
  • ASME 2003 International Electronic Packaging Technical Conference and Exhibition, 2003 International Electronic Packaging Technical Conference and Exhibition, Volume 1 https://doi.org/10.1115/IPACK2003-35015
conference January 2009
Prediction of light extraction efficiency of LEDs by ray trace simulation conference January 2004

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