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Title: Optical manifold for light-emitting diodes

Abstract

An optical manifold for efficiently combining a plurality of blue LED outputs to illuminate a phosphor for a single, substantially homogeneous output, in a small, cost-effective package. Embodiments are disclosed that use a single or multiple LEDs and a remote phosphor, and an intermediate wavelength-selective filter arranged so that backscattered photoluminescence is recycled to boost the luminance and flux of the output aperture. A further aperture mask is used to boost phosphor luminance with only modest loss of luminosity. Alternative non-recycling embodiments provide blue and yellow light in collimated beams, either separately or combined into white.

Inventors:
; ; ; ; ; ;
Issue Date:
Research Org.:
Light Prescriptions Innovators, LLC, Altadena, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176183
Patent Number(s):
7380962
Application Number:
11/329,294
Assignee:
Light Prescriptions Innovators, LLC (Altadena, CA)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F21 - LIGHTING F21S - NON-PORTABLE LIGHTING DEVICES
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
DOE Contract Number:  
FC26-05NT42341
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Chaves, Julio C., Falicoff, Waqidi, Minano, Juan C., Benitez, Pablo, Parkyn, Jr., William A., Alvarez, Roberto, and Dross, Oliver. Optical manifold for light-emitting diodes. United States: N. p., 2008. Web.
Chaves, Julio C., Falicoff, Waqidi, Minano, Juan C., Benitez, Pablo, Parkyn, Jr., William A., Alvarez, Roberto, & Dross, Oliver. Optical manifold for light-emitting diodes. United States.
Chaves, Julio C., Falicoff, Waqidi, Minano, Juan C., Benitez, Pablo, Parkyn, Jr., William A., Alvarez, Roberto, and Dross, Oliver. Tue . "Optical manifold for light-emitting diodes". United States. https://www.osti.gov/servlets/purl/1176183.
@article{osti_1176183,
title = {Optical manifold for light-emitting diodes},
author = {Chaves, Julio C. and Falicoff, Waqidi and Minano, Juan C. and Benitez, Pablo and Parkyn, Jr., William A. and Alvarez, Roberto and Dross, Oliver},
abstractNote = {An optical manifold for efficiently combining a plurality of blue LED outputs to illuminate a phosphor for a single, substantially homogeneous output, in a small, cost-effective package. Embodiments are disclosed that use a single or multiple LEDs and a remote phosphor, and an intermediate wavelength-selective filter arranged so that backscattered photoluminescence is recycled to boost the luminance and flux of the output aperture. A further aperture mask is used to boost phosphor luminance with only modest loss of luminosity. Alternative non-recycling embodiments provide blue and yellow light in collimated beams, either separately or combined into white.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {6}
}

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