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:
Dec. 03, 2002
Filed:
Apr. 12, 2002
Christian Bartenbach, Rinn, AT;
Roman Fuchs, Schaffhausen, CH;
Jugo Fuhrmann, Konstanz, DE;
Jörg Maier, Engen, DE;
Alcan Technology & Management Ltd., Neuhausen am Rheinfall, CH;
Abstract
A process for manufacturing a panel light-guiding element, including the step of rolling a metal body of one of aluminum and an aluminum alloy in at least one pass between at least two rolls to form a rolled product having at least one structured surface as a light guiding structure having a rib pattern of height h and a tooth-like cross-section. The tooth-like cross-section have a periodic structure of rows of triangles. The triangles have bases which follow each other, a first side of each of the triangles running at an angle &agr;, and a second side at an angle &bgr; from the base which has a length l. At least one of the rolls exhibits an embossed pattern that is structured to form the rib pattern in a rolling direction over a full length of the rolled product and is tooth-like in cross-section so that the angle &agr; is in a range of 5 to 60°, the angle &bgr; in a range of 10 to 90°, the length l in a range of 0.01 to 10 mm and the height h is 0.1 to 2 mm.