Patent · US Active

Lighting device

US9291315B2 · kind B2 · utility

1Cited by

3References

5Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Joerg Sorg · Regensburg, DE
Florian Boesl · Regensburg, DE
Dennis Sprenger · Schlangen, DE

Key dates

Filing date	Jul 1, 2014
Grant date	Mar 22, 2016
Priority date	—
Expiry date	Jul 1, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0008
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In various embodiments, a lighting device includes at least one laser light source and a light wavelength conversion element. The light wavelength conversion element includes phosphor which is arranged on a surface region of a substrate and is used for wavelength conversion of the light emitted by the at least one laser light source. The light wavelength conversion element has a greater thickness at the edge of the surface region, provided with phosphor, of the substrate than at the surface centroid of the surface region, provided with phosphor, of the substrate. The thickness is respectively measured perpendicularly to the surface region, provided with phosphor, of the substrate.

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