Global Patent Index - EP 1104006 A2

EP 1104006 A2 2001-05-30 - Flat lamp

Title (en)

Flat lamp

Title (de)

Flache Lampe

Title (fr)

Ampoule plate

Publication

EP 1104006 A2 (FR)

Application

EP 00204005 A

Priority

FR 9914743 A

Abstract (en)

A flat heating bulb has an envelope (ENV) with a base (BOT) and emitting surface (ES). It contains a radiation source (LEM) which may be a flat filament or a number of coplanar filaments. If the filaments are raised to incandescence the envelope may with advantage be filled with an inert gas. The base of the envelope (BOT) is coated with a reflecting layer (REF) which intensifies the emitted radiation

Abstract (fr)

La présente invention concerne une ampoule destinée à émettre un rayonnement au travers d'une surface d'émission (ES) d'une enveloppe (ENV) contenant une source de rayonnement (LEM). Selon l'invention, la surface d'émission (ES) est substantiellement plane, la source de rayonnement définissant une surface plane parallèle à la surface d'émission. Une ampoule conforme à l'invention est capable d'émettre un rayonnement homogène vers une surface plane avec une densité de rayonnement élevée. <IMAGE>

IPC 1-7 (main, further and additional classification)

H01J 61/30; H01K 1/14; H01K 7/00

IPC 8 full level (invention and additional information)

H05B 3/00 (2006.01); H01J 61/30 (2006.01); H01K 1/14 (2006.01); H01K 7/00 (2006.01); H05B 3/10 (2006.01); H05B 3/16 (2006.01)

CPC (invention and additional information)

H01J 61/305 (2013.01); H01K 1/14 (2013.01); H01K 7/00 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 1104006 A2 20010530; EP 1104006 A3 20011004; CN 1297250 A 20010530; JP 2001210451 A 20010803; US 6608442 B1 20030819

INPADOC legal status


2003-12-10 [18W] APPLICATION WITHDRAWN

- Effective date: 20031013

2002-06-26 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB

2002-06-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020404

2001-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2001-10-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI

2001-05-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB

2001-05-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2001-05-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI