Patent · US Active

LED light source with a luminescent layer

US8651723B2 · kind B2 · utility

3Cited by

10References

16Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Thomas Juestel · Aachen, DE
Jacqueline Merikhi · Aachen, DE
Henning Ohland · Aachen, DE
Joachim Opitz · Aachen, DE
Harald Josef Günther Radermacher · Aachen, DE
Detlef Uwe Wiechert · Alsdorf, DE

Key dates

Filing date	Feb 18, 2009
Grant date	Feb 18, 2014
Priority date	—
Expiry date	Dec 18, 2030

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 GLS-look-alike LED light source (100) comprising two different types of LEDs (21, 22), preferably LEDs emitting with a near UV spectrum and a blue or white spectrum, respectively. The light source (100) further preferably comprises a transparent bulb (40) with a shape similar to an incandescent lamp that is coated by a luminescent layer (30) to achieve a white lamp spectrum. The luminescent layer may contain one or two luminescent compositions.

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