Rolled metal product used as a light-guiding structure
US6389216B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1998 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-guiding panel element arrangeable on a wall or a ceiling for lighting purposes. The light-guiding panel element including a walled metal body having at least one structured surface as a light deflecting structure with a ray of the pattern height h and a toothed-like cross-section. The tooth-like cross-section represents a period structure of rows of triangles. The triangles have bases that follow each other. A first side of each triangle runs at an angle &agr; and a second side at an angle &bgr; from the base which is length 1. The rib structure runs in a rolling direction, &agr; is an angle of 5 to 60°, &bgr; at an angle of 10 to 90°, a 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 forms an edge with a radius r1 that is less than l/10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.