Patent · US Active

Illumination unit consisting of discharge lamp, LEDs and conversion phosphors

US8256920B2 · kind B2 · utility

1Cited by

7References

12Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Holger Winkler · Darmstadt, DE
Thomas Juestel · Aachen, DE

Key dates

Filing date	Apr 18, 2008
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Jan 6, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21Y2115/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an illumination unit having an adjustable color location consisting of a discharge lamp as primary light source and LEDs as secondary light source and additionally a phosphor layer in the form of a phosphor screen comprising conversion phosphors. Furthermore, the present invention relates to a method for lighting usable areas by the illumination unit according to the invention.

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