Patent · US Expired

Flat illumination device with mirror surface

US6630769B2 · kind B2 · utility

1Cited by

3References

10Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Udo Custodis · Munich, DE
Michael Seibold · Schwäbisch Gmünd, DE

Key dates

Filing date	Apr 26, 2002
Grant date	Oct 7, 2003
Priority date	—
Expiry date	Apr 26, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01J65/046
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A flat illumination device (1), includes a base plate and a front plate which are connected to form an at least partially transparent vessel which, in its interior, has an ionizable fill. In a partial region of the vessel, at least one of the two plates is at least in part provided with a mirror surface. An unmirrored partial region (12) of the vessel is designed to realize an illumination function.

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