EP 0359200 A2 19900321 - Metal halide discharge lamp with improved color rendering properties.
Title (en)
Metal halide discharge lamp with improved color rendering properties.
Title (de)
Metallhalogenidentladungslampe mit verbesserter Farbwiedergabe.
Title (fr)
Lampe à décharge à halogénures métalliques à rendu de couleurs amélioré.
Publication
Application
Priority
US 24337088 A 19880912
Abstract (en)
A low wattage metal halide lamp having improved CRI is disclosed. The low wattage metal halide discharge lamp of the present invention comprises an outer sealed glass envelope; a pair of electrical conductors sealed into and passing through the glass envelope; an arc tube disposed within the outer glass envelope, the arc tube including a pair of spaced electrodes therein with the electrodes being electrically connected to the electrical conductors such that one electrode is electrically connected to one electrical conductor; a chemical fill disposed within the arc tube, the chemical fill comprising mercury, scandium metal, sodium iodide, scandium iodide, lithium iodide, and a starting gas; and a support structure disposed within the outer glass envelope to support the arc tube therein, the support structure (12) being electrically isolated from the electrical circuit of the lamp.
IPC 1-7
IPC 8 full level
H01J 61/20 (2006.01); H01J 61/34 (2006.01); H01J 61/82 (2006.01)
CPC (source: EP)
H01J 61/34 (2013.01); H01J 61/827 (2013.01)
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
EP 0359200 A2 19900321; EP 0359200 A3 19910508; EP 0359200 B1 19940622; CA 1324633 C 19931123; DE 68916346 D1 19940728; DE 68916346 T2 19950216; JP H02177245 A 19900710
DOCDB simple family (application)
EP 89116864 A 19890912; CA 610989 A 19890911; DE 68916346 T 19890912; JP 23484189 A 19890912