Patent · US Active

Phosphor converted LED

US11101409B2 · kind B2 · utility

0Cited by

3References

19Claims

0Family size

Assignee

KONINIKLIJKE PHILIPS N.V. · NL

Inventors

Peter Josef Schmidt · Aachen, DE
Walter Mayr · Alsdorf, DE
Volker Weiler · Aachen, DE
Hans-Helmut Bechtel · Roetgen, DE

Key dates

Filing date	Dec 17, 2015
Grant date	Aug 24, 2021
Priority date	—
Expiry date	Dec 17, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention provides a lighting device configured to provide white lighting device light, the lighting device comprising (i) a light source, configured to provide blue light source light, and (ii) a luminescent material element, configured to absorb at least part of the blue light source light and to convert into luminescent material light, wherein the luminescent material element comprises a luminescent material which consists for at least 80 wt. % of a M2-2xEu2xSi5-yAlyOyN8-y phosphor, wherein M comprises one or more of Mg, Ca, Sr, Ba, with a molar ratio of (Mg+Ca+Sr)/(Ba)≤0.1, wherein x is in the range of 0.001-0.02, wherein y is in the range of ≤0.2, and wherein the white lighting device light comprises said blue light source light and said luminescent material light.

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