Patent · US Expired

Lighting device comprising a plurality of semiconductor light sources

US7407303B2 · kind B2 · utility

24Cited by

4References

22Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Mario Wanninger · Regensburg, DE
Markus Hofmann · Bad Abbach, DE
Gunter Waitl · Regensburg, DE
Alexander Wilm · Regensburg, DE

Key dates

Filing date	Dec 21, 2005
Grant date	Aug 5, 2008
Priority date	—
Expiry date	Dec 21, 2025

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0055
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lighting device is disclosed comprising a plurality of semiconductor light sources disposed on a carrier, wherein the light from the light sources is coupled into assigned lightguides at a set angle to the surface normals of the carrier and the lightguides are provided with reflecting and light exit faces such that the envelope of the light outcoupling faces forms a curved surface segment.

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