THREE-PHASE METAL-HALOGEN LAMP Russian patent published in 1994 - IPC

FIELD: lighting engineering; three-phase metal-halogen lamps. SUBSTANCE: used in filler of three-phase lamp are additional to provide envelope with halides of radiating metals in amount from 0.3 to 33.0 mc·mol/cm³; inert gas pressure is from 26.6 to 200.0 kPa. Filler of lamp has also additions to provide envelope with indium, thallium and sodium halides in amount from 0.2 to 6.0, 0.15 to 8.0 and 0.5 to 10.0 mc·mol/cm³, respectively and additions to provide envelope with indium, calcium and sodium halides in amounts from 0.2 to 6.0, 0.3 to 9.0 and 0.5 to 10.0 mc·mol/cm³, respectively. Also used are additions to provide envelope with lithium halides in amount from 0.4 to 8.0 mc·mol/cm³ and additions to provide envelope with nickel, cobalt and ferrum halides in amounts from 0.5 to 5.0, 0.15 to 6.0 and 0.15 to 9.0 mc·mol/cm³, respectively. Use can be made of additions to provide envelope with cesium halides in amounts from 0.2 to 10.0 mc·mol/cm³ and titanium halides in amounts from 0.3 to 6.0 mc·mol/cm³. EFFECT: enlarged operating capabilities. 7 cl, 1 dwg, 1 tbl