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Title: Optical devices

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:
1176410
Patent Number(s):
7755838
Application Number:
11/890,601
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
Resource Relation:
Patent File Date: 2007 Aug 06
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION

Citation Formats

Chaves, Julio C., Falicoff, Waqidi, Minano, Juan C., Benitez, Pablo, Dross, Oliver, and Parkyn, Jr., William A. Optical devices. United States: N. p., 2010. Web.
Chaves, Julio C., Falicoff, Waqidi, Minano, Juan C., Benitez, Pablo, Dross, Oliver, & Parkyn, Jr., William A. Optical devices. United States.
Chaves, Julio C., Falicoff, Waqidi, Minano, Juan C., Benitez, Pablo, Dross, Oliver, and Parkyn, Jr., William A. Tue . "Optical devices". United States. https://www.osti.gov/servlets/purl/1176410.
@article{osti_1176410,
title = {Optical devices},
author = {Chaves, Julio C. and Falicoff, Waqidi and Minano, Juan C. and Benitez, Pablo and Dross, Oliver and Parkyn, Jr., William A.},
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 = {2010},
month = {7}
}

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Works referenced in this record:

Hemispherical-field-of-view, nonimaging narrow-band spectral filter
journal, January 1981