Illumination – Light source and modifier – Including translucent or transparent modifier
Reexamination Certificate
2011-01-25
2011-01-25
O Shea, Sandra L (Department: 2875)
Illumination
Light source and modifier
Including translucent or transparent modifier
C362S296010, C362S297000, C362S310000, C362S341000, C362S346000
Reexamination Certificate
active
07874704
ABSTRACT:
The diffuse reflectivity of an LED source is utilized to recycle some of its emission, thereby enabling a luminaire to escape the étendue limit. Retroreflectors intercept the rays destined for the outer part of the luminaire aperture, which can then be truncated. The resulting smaller aperture has the same beam-width as the full original, albeit with lesser flux due to recycling losses. A reduction to half the original area is possible.
REFERENCES:
patent: 5684354 (1997-11-01), Gleckman
patent: 5892325 (1999-04-01), Gleckman
patent: 6043591 (2000-03-01), Gleckman
patent: 6496237 (2002-12-01), Gleckman
patent: 6639733 (2003-10-01), Minano et al.
patent: 6730940 (2004-05-01), Steranka et al.
patent: 6869206 (2005-03-01), Zimmerman et al.
patent: 6896381 (2005-05-01), Benitez et al.
patent: 6960872 (2005-11-01), Beeson et al.
patent: 7006306 (2006-02-01), Falicoff et al.
patent: 7025464 (2006-04-01), Beeson et al.
patent: 7040774 (2006-05-01), Beeson et al.
patent: 7152985 (2006-12-01), Benitez et al.
patent: 7181378 (2007-02-01), Benitez et al.
patent: 2006/0239006 (2006-10-01), Chaves et al.
patent: 2006/0285332 (2006-12-01), Goon et al.
patent: 2007/0263298 (2007-11-01), El-Ghoroury et al.
patent: 2008/0074752 (2008-03-01), Chaves et al.
patent: 2010/0038663 (2010-02-01), Benitez et al.
David R. Mills and John E. Giutronich,Three-dimensional Ideal Concentrators for Distant Sources, Optics Communications, vol. 28(3), pp. 268-274 (Mar. 1979), reprinted in Roland Winston, Ed.,Selected Papers on Nonimaging Optics, SPIE Milestone Series vol. MS 106, 1995, pp. 226-232.
D. Cooke et al.,Sunlight brighter than the Sun, Nature, vol. 346, p. 802 (Aug. 30, 1990).
W.T. Welford and R. Winston,High Collection Nonimaging Optics, equation (2.8) on p. 25 (1989).
Ari Rabl,Comparison of Solar Concentrators, Solar Energy, vol. 18, pp. 93-111 (1976), reprinted inSelected Papers on Nonimaging Optics, pp. 62-80.
Benitez Pablo
Chaves Julio C.
Falicoff Waqidi
Miñano Juan Carlos
Parkyn, Jr. William A.
Drinker Biddle & Reath LLP
Dunwiddie Meghan K
O Shea Sandra L
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