Patent · US Active

Light system with increased efficiency

US9080744B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Dirk Berben · Herdecke, DE
Joerg Frischeisen · Schwabmünchen, DE
Frank Jermann · Königsbrunn, DE
Stefan Lange · Shepperton, GB

Key dates

Filing date	Sep 27, 2011
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Mar 21, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/8515
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light system based on at least two chips, in particular LEDs containing chips may include at least one first chip capable of emitting a primary radiation, a layer containing a phosphor mounted in front of the first chip, for converting the primary radiation of the first chip into secondary radiation, at least one second chip capable of emitting a second primary radiation with a greater wavelength than the primary radiation, wherein the layer is arranged spaced apart from the first chip, wherein the second chip is arranged in such a way that its radiation is substantially not absorbed by the phosphor.

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