Patent · US Active

Surface light source

US9176268B2 · kind B2 · utility

1Cited by

8References

12Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Peter Brick · Regensburg, DE
Joachim H. Frank · Lörrach, DE
Uli Hiller · Bad Abbach, DE
Stephan Kaiser · Regensburg, DE
Gerhard Kuhn · Altötting, DE
Ales Markytan · Regensburg, DE
Julius Muschaweck · Gauting, DE
Christian Neugirg · Regensburg, DE

Key dates

Filing date	Apr 4, 2011
Grant date	Nov 3, 2015
Priority date	—
Expiry date	Jan 5, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0073
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a surface light source with a lighting surface that includes at least one semiconductor body that emits electromagnetic radiation from its front side during operation. Decoupling structures are suitable for producing a local variation of the light density on the lighting surface, so that the light density is increased in at least one illumination area with respect to a background area.

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