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 F21K - NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE
F - MECHANICAL ENGINEERING F21 - LIGHTING F21S - NON-PORTABLE LIGHTING DEVICES
- 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 = {Tue Jul 13 00:00:00 EDT 2010},
month = {Tue Jul 13 00:00:00 EDT 2010}
}
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Works referenced in this record:
Hemispherical-field-of-view, nonimaging narrow-band spectral filter
journal, January 1981
- Miles, R. B.; Webb, S. G.; Griffith, E. L.
- Optics Letters, Vol. 6, Issue 12