Patent · US Active

Light-emitting device

US8256947B2 · kind B2 · utility

3Cited by

6References

35Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Volker Harle · Hemau, DE
Alfred Lell · Maxhütte-Haidhof, DE
Hubert Ott · Bad Abbach, DE
Norbert Stath · Regensburg, DE
Uwe Strauss · Bad Abbach, DE

Key dates

Filing date	May 31, 2007
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Feb 16, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/562
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light-emitting device, comprising: a radiation source (5), which emits radiation having a first wavelength, an optical waveguide (10), into which the radiation emitted by the radiation source is coupled, and a converter material (15), which converts the radiation transported through the optical waveguide (10) into light (20) having a second, longer wavelength. A light-emitting device of this type can have an improved light conversion efficiency.

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