Patent · US Active

High-pressure mercury vapor lamp incorporating a predetermined germanium to oxygen molar ratio within its discharge fill

US7733027B2 · kind B2 · utility

1Cited by

7References

11Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Achim Gerhard Rolf Körber · Kerkrade, NL
Rainer Hilbig · Aachen, DE
Robert Scholl · Roetgen, DE
Johannes Baier · Harsewinkel, DE

Key dates

Filing date	Jan 5, 2005
Grant date	Jun 8, 2010
Priority date	—
Expiry date	Sep 29, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/822
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A high-pressure mercury vapor lamp suitable for sterilization purposes. Germanium and oxygen are added in small quantities to the mercury and/or the mercury halides, with a molar ratio of germanium to oxygen being greater than 1. The addition of germanium monoxide increases the GAC efficiency (GAC: short for Germicidal Action Curve) of a high-pressure mercury vapor lamp, because germanium monoxide emits a strong molecular band system in the range from 250 to 280 nm.

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