Illumination – Light fiber – rod – or pipe
Reexamination Certificate
2007-01-16
2007-01-16
Payne, Sharon (Department: 2875)
Illumination
Light fiber, rod, or pipe
C362S576000, C362S092000
Reexamination Certificate
active
11108279
ABSTRACT:
A luminaire with directional side-light extraction comprises a light pipe with a light-carrying core. The light pipe has light-extraction structure along a first longitudinal side of the luminaire, which is confined to a radial swath of the luminaire, along the longitudinal axis of the luminaire, of substantially less than 180°. For efficiency, the second end has light-saving structure for directing saved light from the second end towards the first end, at redirection angles other than an excluded range of redirection angles, so long as the photon content of light at so-called alpha redirection angles is at least 10 percent of the photon content of light at so-called beta redirection angles, where the excluded range of redirection angles is defined by:in-line-formulae description="In-line Formulae" end="lead"?|βr|<=20°and |αr|<|βr|/10,in-line-formulae description="In-line Formulae" end="tail"?where βris the beta redirection angle and αris the alpha redirection angle.
REFERENCES:
patent: 3497981 (1970-03-01), Tyne
patent: 3535018 (1970-10-01), Vasilatos
patent: 4585298 (1986-04-01), Mori
patent: 4765701 (1988-08-01), Cheslak
patent: 4907132 (1990-03-01), Parker
patent: 5036435 (1991-07-01), Tokuda et al.
patent: 5222795 (1993-06-01), Hed
patent: 5307245 (1994-04-01), Myers et al.
patent: 5312569 (1994-05-01), Mezei
patent: 5312570 (1994-05-01), Halter
patent: 5499912 (1996-03-01), Mezei
patent: 5542017 (1996-07-01), Koike
patent: 5857761 (1999-01-01), Abe et al.
patent: 5982969 (1999-11-01), Sugiyama et al.
patent: 5987199 (1999-11-01), Zarian et al.
patent: 6039553 (2000-03-01), Lundin et al.
patent: 6095673 (2000-08-01), Goto et al.
patent: 6169836 (2001-01-01), Sugiyama et al.
patent: 6215947 (2001-04-01), Abramowicz et al.
patent: 6278827 (2001-08-01), Sugiyama et al.
patent: 6488397 (2002-12-01), Masutani et al.
patent: 6563993 (2003-05-01), Imamura et al.
patent: 6577794 (2003-06-01), Currie et al.
patent: 6597834 (2003-07-01), Hata
patent: 6637924 (2003-10-01), Pelka et al.
patent: 6726341 (2004-04-01), Pashley et al.
patent: 6783269 (2004-08-01), Pashley et al.
patent: 2002/0159741 (2002-10-01), Graves et al.
US 6,419,383, 07/2002, Lundin (withdrawn)
Photograph of light pipe shown at the following two exhibitions: (1) Defense Advanced Research Projects Agency (DARPA), attended by military—and military contractors, Mar. 9-11, 2004 (DARPA) (2) Light Fair, Las Vegas, Nevada, attended by the public, Mar. 31-Apr. 2, 2004.
4 pages entitled “Unlglo Backlighting” from http://www.poly-optical.com/uniglo.html webpage—(viewed on May 2, 2004) showing uniform extraction of light from a light guide—admitted as prior art.
2 pages entitled “Design of Luxaura Light Guide” from http://www.luxaura.com/tech.shtml website—(viewed on May 2, 2004) showing emitting light in a radial swath—admitted as prior art.
Specification and drawings for U.S. Appl. No. 10/796,830, filed Mar. 9, 2004, for Light Pipe with Directional Side-Light Extraction by Roger F. Buelow II, John M. Davenport, and Chris Jenson. This application is copending with the present application and is assigned, or subject to assignment, to the same assignee as the present application.
Specification and drawings for U.S. Appl. No. 10/797,383, filed Mar. 10, 2004, for Light Pipe with Side Light Extraction by Roger F. Buelow II, Chris H. Jenson, and John M. Davenport. This application is copending with the present application and is assigned, or subject to assignment, to the same assignee as the present application.
Specification and drawings for U.S. Appl. No. 10/797,761, filed Mar. 10, 2004, for Light Pipe with Side Light Extraction by Roger F. Buelow II, Chris H. Jenson, and John M. Davenport. This application is copending with the present application and is assigned, or subject to assignment, to the same assignee as the present application.
Cassarly William J.
Davenport John M.
Davenport Thomas L. R.
Jenson Chris H.
Bruzga Charles E.
Bruzga & Associates
Fiberstars, Inc.
Payne Sharon
LandOfFree
Efficient luminaire with directional side-light extraction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Efficient luminaire with directional side-light extraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Efficient luminaire with directional side-light extraction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3814497