Patent · US Active

Light engine having distributed remote phosphors

US8708543B2 · kind B2 · utility

0Cited by

14References

27Claims

0Family size

Assignee

OSRAM SYLVANIA Inc. · US

Inventors

Dongxue Wang · Lake Zurich, US
Matthew A. Stough · Exeter, US
Martin Zachau · Geltendorf, DE

Key dates

Filing date	Aug 10, 2011
Grant date	Apr 29, 2014
Priority date	—
Expiry date	May 22, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0035
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

There is herein described a light engine that emits a light. The light engine includes a light source, a light guide, a plurality of extraction optical elements, and a plurality of phosphors. The light guide receives the light. The extraction optical elements are on the surface of the light guide. The extraction optical elements extract at least a portion of the light out of the light guide. The phosphors are disposed on top of at least some of the extraction optical elements.

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