Patent ID: 6389216
Filing Date: 2002-05-14
Classification: B21B,F21S,Y10S

Abstract:
A light-guiding panel element arrangeable on one of a wall and ceiling for lighting purposes, comprising a rolled metal body having at least one structured surface as a light guiding structure with a rib pattern of height h and a tooth-like cross-section, the tooth-like cross-section representing a periodic structure of rows of triangles that extend completely across the metal body, the triangles having bases that follow each other, a first side of each triangle running at an angle &agr;, and a second side at an angle &bgr; from the base which is of length l, the rib structure running in a rolling direction, &agr; is an angle of 5 to 60Â°, &bgr; an angle of 10 to 90Â°, length l is 0.01 to 10 mm and the height h of the rib pattern is 0.1 to 2 mm, a line of contact of both sides of each triangle forming an edge with a radius r1 that is less than l/10.