Patent · US Active

Surface light guide and planar emitter

US9488769B2 · kind B2 · utility

2Cited by

4References

21Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Peter Brick · Regensburg, DE
Joachim H. Frank · Lörrach, 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	Mar 23, 2011
Grant date	Nov 8, 2016
Priority date	—
Expiry date	Mar 21, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0063
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A surface light guide includes a radiation exit area running along a main extension plane of the surface light guide and includes a light guiding region, which has scattering locations and a coating arranged on a first main area of the light guiding region, wherein radiation coupled in along the main extension plane impinging on the first main area after scattering at the scattering locations has an excessively increased radiation component and the coating reduces in a targeted manner an exit of the excessively increased radiation component from the radiation exit area.

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