METAL-AND-HALOGEN LAMP Russian patent published in 1994 - IPC

FIELD: electrical engineering. SUBSTANCE: metal-and-halogen lamp has burner made of optically transparent material with electrodes installed with sealing. Lamp is filled with inert gas and additives to provide burner with halogenides of emitting metals. In filling composition there are used additives to supply burner with halogenides of thallium and cesium in the amount from 0.1 to 3 and from 0.2 to 10 μmole/cm³ correspondingly. In burner of lamp there are injected additives to provide it with halogenides of indium in the amount from 0.1 to 5.0 μmole/cm³ and of sodium in the amount from 0.5 to 10 μmole/cm³. EFFECT: enhanced efficiency and prolonged service life. 3 cl, 1 tbl, 1 dwg