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:
Apr. 11, 2017
Filed:
Jan. 30, 2012
Ekkehard Gaydoul, Gross-Bieberau, DE;
Armin Plichta, Sponheim, DE;
Juergen Meinl, Hohenstein-Holzhausen, DE;
Bjoern Bleisinger, Riesweiler, DE;
Martin Cramer, Wiesbaden, DE;
Thomas Reichert, Wackernheim, DE;
Marc Timon Sprzagala, Mainz, DE;
Sandra Mattheis, Eltville, DE;
Ekkehard Gaydoul, Gross-Bieberau, DE;
Armin Plichta, Sponheim, DE;
Juergen Meinl, Hohenstein-Holzhausen, DE;
Bjoern Bleisinger, Riesweiler, DE;
Martin Cramer, Wiesbaden, DE;
Thomas Reichert, Wackernheim, DE;
Marc Timon Sprzagala, Mainz, DE;
Sandra Mattheis, Eltville, DE;
SCHOTT AG, Mainz, DE;
Abstract
LED lighting devices are provided that include two optical waveguides and at least one LED in an intermediate region between end faces of the optical waveguides so that radiation from the LED is coupled into the optical waveguides through the end faces. A de-coupler is on outer circumferential surface regions of each of the two separate optical waveguides. The de-coupler reflects the radiation guided in the optical waveguides so that the radiation passes through the optical waveguides and is coupled out of the optical waveguides laterally. The intermediate region has a length that is selected so that a brightness difference, measured perpendicular to an axis of the optical waveguides in the center of the intermediate region, at a distance of 10 mm perpendicular to the axis of the optical waveguides is at most 25% based on a maximum value of brightness along the axis of the optical waveguides.