The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2009
Filed:
Apr. 05, 2006
William J. Cassarly, Mason, OH (US);
Thomas L. R. Davenport, Tucson, AZ (US);
John M. Davenport, Middleburg Heights, OH (US);
Chris H. Jenson, Twinsburg, OH (US);
William J. Cassarly, Mason, OH (US);
Thomas L. R. Davenport, Tucson, AZ (US);
John M. Davenport, Middleburg Heights, OH (US);
Chris H. Jenson, Twinsburg, OH (US);
Energy Focus, Inc., Solon, OH (US);
Optical Research Associates, Pasadena, CA (US);
Abstract
Luminaire with directional side-light extraction comprises a light pipe with a light-carrying core, and with a light-extraction structure along a first longitudinal side of the luminaire, confined to a radial swath of the luminaire, along the longitudinal axis of the luminaire, of substantially less than 180°. The second end of the light pipe has light-saving means for directing saved light from the second end towards the first end. The light-extraction means is adjustable to accommodate angular distributions of light from various light sources.