METAL-HALOGEN LAMP Russian patent published in 1995 - IPC

FIELD: agriculture. SUBSTANCE: metal-halogen lamp has burner made of optically transparent material with electrodes placed tight filled with inert gas under pressure from 13.3 up to 200 KPa and additives to provide burner with halogenides of lithium in the amount from 0.1 up to 15.0 μmole/cm³. Halogenides of sodium and at least of one of elements of third group of the periodic system in the amount of 0.2-13.0 and 0.05-15.0 μmole/cm³ correspondingly are additionally injected into lamp burner. Halogenides of scandium in the amount from 0.06 up to 3.0 μmole/cm³ or of dysprosium in the amount from 0.05 up to 5.0 μmole/cm³ of thulium in the amount from 0.05 up to 6.0 μmole/cm³ can be used to provide burner with additives. EFFECT: enhanced growing efficiency of vegetables. 5 cl, 2 dwg, 1 tbl