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EP 0623946 A1 19941109 - Low-pressure sodium discharge lamp.

Title (en)

Low-pressure sodium discharge lamp.

Title (de)

Niederdruck Natrium Entladungslampe.

Title (fr)

Lampe à décharge à basse pression au sodium.

Publication

EP 0623946 A1 19941109

Application

EP 94201152 A 19940427

Priority

EP 94201152 A 19940427
EP 93201256 A 19930503

Abstract (en)

In the low-pressure sodium discharge lamp the current conductors (3) have a first (4) and a second glass coating (6). The first coating (5) of borate glass extends from inside the discharge vessel (1) through a pinch seal (4). The second coating (6) of lime glass envelopes the first one (5) within the pinch seal (4) and extends to outside the discharge vessel (4). The occurrence of cracks in the pinch seal is thereby obviated. <IMAGE>

IPC 1-7

H01J 61/36

IPC 8 full level

H01J 61/36 (2006.01)

CPC (source: EP)

H01J 61/368 (2013.01)

Citation (search report)

[DA] EP 0129288 A1 19841227 - PHILIPS NV [NL]

Designated contracting state (EPC)

BE DE FR GB NL

DOCDB simple family (publication)

EP 0623946 A1 19941109; EP 0623946 B1 19970115

DOCDB simple family (application)

EP 94201152 A 19940427