Title (en)

FLUORESCENT LAMP WITH LUMINESCENT MATERIAL LAYER THICKNESS ADAPTED TO THE GEOMETRICAL DISCHARGE DISTRIBUTION

Title (de)

LEUCHTSTOFFLAMPE MIT AUF DIE GEOMETRISCHE ENTLADUNGSVERTEILUNG ABGESTIMMTER LEUCHTSTOFFSCHICHTDICKE

Title (fr)

TUBE FLUORESCENT AVEC EPAISSEUR DE COUCHE DE LA SUBSTANCE FLUORESCENTE ADAPTEE A LA REPARTITION GEOMETRIQUE DES DECHARGES

Publication

EP 0992060 A1 20000412 (DE)

Application

EP 99945733 A 19990409

Priority

• DE 9901094 W 19990409
• DE 19817477 A 19980420

Abstract (en)

[origin: DE19817477A1] The fluorescent lamp has a discharge vessel filled with a gas filling and has a fluorescent coating (1). It has an electrode structure (2) for a discharge that is restrained in dielectric fashion. The electrode structure establishes a geometric distribution of part-discharges (3) in the region of the lamp. The fluorescent coating has a varying coating thickness matched to the geometric distribution. The electrode structure establishes the geometric distribution by cathode projections (4) and by varying the thickness of an electrode dielectric as well as by variation of the width of the electrodes.

IPC 1-7

H01J 61/42; H01J 65/00; H01J 65/04

IPC 8 full level

H01J 61/42 (2006.01); H01J 65/00 (2006.01); H01J 65/04 (2006.01)

CPC (source: EP KR US)

H01J 61/42 (2013.01 - EP KR US); H01J 65/00 (2013.01 - EP US); H01J 65/046 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

DE 19817477 A1 19991021; CA 2294315 A1 19991028; DE 59900820 D1 20020321; EP 0992060 A1 20000412; EP 0992060 B1 20020206; JP 2000513498 A 20001010; JP 3388546 B2 20030324; KR 100356284 B1 20021012; KR 20010020614 A 20010315; TW 434640 B 20010516; US 6340862 B1 20020122; WO 9954915 A1 19991028

DOCDB simple family (application)

DE 19817477 A 19980420; CA 2294315 A 19990409; DE 59900820 T 19990409; DE 9901094 W 19990409; EP 99945733 A 19990409; JP 55230299 A 19990409; KR 19997012637 A 19991220; TW 88105937 A 19990414; US 44601399 A 19991216