Patent · US Active

Lighting device with a pump laser matrix, and method for operating said lighting device

US9702513B2 · kind B2 · utility

1Cited by

1References

18Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Josef Kroell · Potsdam, DE
Ulrich Hartwig · Berlin, DE
Kai Franz · Regensburg, DE
Klaus Finsterbusch · Berlin, DE

Key dates

Filing date	Jan 15, 2013
Grant date	Jul 11, 2017
Priority date	—
Expiry date	May 2, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lighting device comprising a pump laser matrix (2) and a phosphor arrangement. The pump laser matrix (2) is configured to emit pump radiation (7) having a controllable pump radiation power distribution for the irradiation of the phosphor arrangement (4). The phosphor arrangement (4) comprises at least two different phosphors (R, Y, G) which can be irradiated with the pump radiation (7) and re-emit said pump radiation in a manner such that it is at least partly and in each case differently wavelength-converted. The lighting device (1) is configured to generate, with the aid of the pump laser matrix (2), a controllable distribution of the surface power density of the pump radiation on the phosphors (R, Y, G) of the phosphor arrangement (4).

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