Patent · US Expired

Lighting unit having a plurality of curved surface elements

US7441929B2 · kind B2 · utility

11Cited by

10References

15Claims

0Family size

Assignee

Odelo GmbH · DE

Inventors

Emil P. Stefanov · Eßlingen, DE
Thomas Luce · Eßlingen, DE
Andreas Erber · Esslingen am Neckar, DE
Jochen Kunze · Moers, DE

Key dates

Filing date	Aug 30, 2005
Grant date	Oct 28, 2008
Priority date	—
Expiry date	Oct 19, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S362/80
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a lighting unit having at least one light source and at least one light guide following the source and at least partially surrounding it, said light guide including at least one light exit surface facing away from the source and at least approximately located centrally, surrounded by at least one externally located light exit surface. In addition, at least one externally located light exit surface comprises a plurality of surface elements adjacent to each other with or without offset. These surface elements are surface regions of curved solids.With the present invention, a compact lighting unit is developed that makes possible a uniformly high yield in a preassigned target region.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.