EP 0276514 A1 19880803 - Metal halide lamp.
Title (en)
Metal halide lamp.
Title (de)
Metallhalogenidlampe.
Title (fr)
Lampe à halogénures métalliques.
Publication
Application
Priority
US 94733386 A 19861229
Abstract (en)
The arc tube (12) of a metal halide lamp (10) has electrodes (14) at each end thereof and contains a discharge sustaining fill consisting essentially of a rare gas,mercury,and halides of sodium and scandium, the fill additionally contains thallium halide in the mole ratio of sodium halide to thallium halide of about 280 : 1 to 75 : 1. In accordance with a preferred embodiment,the mole ratio of sodium halide to thallium halide is maintained within a range of about 260 : 1 to 240 : 1.
IPC 1-7
IPC 8 full level
H01J 61/20 (2006.01); H01J 61/12 (2006.01)
CPC (source: EP)
H01J 61/125 (2013.01)
Citation (search report)
- US 3979624 A 19760907 - LIU CHI-SHENG, et al
- PATENT ABSTRACTS OF JAPAN, Unexamined Applications, E Section, Vol. 4, No. 126, September 5, 1980 The Patent Office Japanese Government page 118 E 24 & JP-A-55 080 258 (Mitsubishi Denki)
- PATENT ABSTRACTS OF JAPAN, Unexamined Applications, E Section, Vol. 5, No. 205, December 25, 1981 The Patent Office Japanese Government page 165 E 88 & JP-A-56 126 244 (Tokyo Shibaura Denki)
- PATENT ABSTRACTS OF JAPAN, Unexamined Applications, E Section, Vol. 7, No. 8, January 13, 1983 The Patent Office Japanese Government page 8 E 152 & JP-A-57 165 947 (Mitsubishi Denki)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 87202592 A 19871221; JP 33187587 A 19871226