Patent · US Expired

Silent discharge lamp with controllable color

US6696781B2 · kind B2 · utility

1Cited by

8References

10Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Udo Custodis · Munich, DE
Angela Eberhardt · Augsburg, DE

Key dates

Filing date	Aug 13, 2002
Grant date	Feb 24, 2004
Priority date	—
Expiry date	Aug 13, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG09F9/313
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A silent discharge lamp which comprises a discharge vessel filled with a gas fill, a plurality of electrodes divided into separately operable groups, a dielectric layer between at least one anode part of the electrodes and the gas fill, and a luminescent layer which has elementary luminescent surfaces of at least two respective luminescent colors. Each elementary luminescent surface is assigned to a different electrode group. The electrode groups and the elementary luminescent surfaces are in each case two-dimensionally interleaved relative to one another so that the light emission surface of the gas discharge lamp can essentially be lit using each electrode group on its own, and the gas discharge lamp is designed so that it is possible to control the color of the light emission by controlling simultaneous operation of the electrode groups.

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