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:
Jan. 20, 2015
Filed:
Mar. 21, 2011
Andreas Barth, Schnaittach, DE;
Julius Muschaweck, Gauting, DE;
Uli Hiller, Bad Abbach, DE;
Michael Sailer, Wolfskofen, DE;
Andreas Barth, Schnaittach, DE;
Julius Muschaweck, Gauting, DE;
Uli Hiller, Bad Abbach, DE;
Michael Sailer, Wolfskofen, DE;
Abstract
A planar light guide includes a main body with a back face and a radiation outcoupling face opposite thereto, a main direction of light guidance parallel to the radiation outcoupling face, at least one plurality of identically shaped and identically oriented outcoupling structures formed on at least one of the main faces, and at least one structure main face per outcoupling structure, wherein an angle-dependent emission characteristic is provided asymmetrically in a first plane parallel to the main direction of light guidance and perpendicular to the radiation outcoupling face.