EP 1793411 A3 20080227 - High pressure discharge lamp
Title (en)
High pressure discharge lamp
Title (de)
Hochdruck-Entladungslampe
Title (fr)
Lampe de décharge haute pression
Publication
Application
Priority
- EP 02257172 A 20021016
- JP 2001319523 A 20011017
- JP 2002319524 A 20011017
Abstract (en)
[origin: EP1793411A2] A high-pressure discharge lamp includes: an arc tube that is made from a translucent ceramic material and composed of a main-tube part in which a discharge space is formed and thin-tube parts extending from both ends of the main-tube part; and a pair of electrodes having rods respectively extending from the two thin-tube parts into the discharge space so that the tops face each other with a distance in-between. The rod of at least one of the electrodes is held by a tubular electrode holder made of a halide-resistant metal embedded in and bonded to the thin-tube part via an adhesive agent including a sintered halide-resistant metal impregnated with mixture glass. The electrode holder is at such a position that satisfies "L‰§0.012P+2.5[mm]", where "L" is distance [mm] between the electrode top and one end of the electrode holder closer to the discharge space, and "P" is lamp wattage [W].
IPC 8 full level
H01J 61/36 (2006.01); H01J 61/34 (2006.01); H01J 61/54 (2006.01); H01J 61/82 (2006.01)
CPC (source: EP)
H01J 61/34 (2013.01); H01J 61/36 (2013.01); H01J 61/363 (2013.01); H01J 61/547 (2013.01); H01J 61/827 (2013.01)
Citation (search report)
- [X] EP 0973187 A1 20000119 - USHIO ELECTRIC INC [JP]
- [X] EP 0982278 A1 20000301 - NGK INSULATORS LTD [JP]
- [A] JP 2000100385 A 20000407 - NGK INSULATORS LTD
- [A] EP 0807957 A2 19971119 - NGK INSULATORS LTD [JP]
- [A] JP H11154493 A 19990608 - NGK INSULATORS LTD
Designated contracting state (EPC)
BE DE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07004209 A 20021016