Patent · US Active

Device for providing electromagnetic radiation

US9903541B2 · kind B2 · utility

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0References

18Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Daniel Bichler · Augsburg, DE
Tim Fiedler · Birkenfeld, DE

Key dates

Filing date	Jun 14, 2013
Grant date	Feb 27, 2018
Priority date	—
Expiry date	Oct 6, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH01S5/0087
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Various embodiments may relate to a device for providing electromagnetic radiation, including a radiation assembly for generating excitation radiation, and at least one conversion element for generating conversion radiation, which has at least one first phosphor and which is arranged at a distance to the radiation assembly in a beam path of the excitation radiation. As the first phosphor, a nitridosilicate of the type M2Si5N8:D is used, wherein D= activator and wherein M is selected from the group barium, strontium, calcium alone or in combination, wherein the mean grain size d50 of the phosphor is at least 10 μm.

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