ELECTRODELESS LOW-PRESSURE MERCURY VAPOUR DISCHARGE LAMP

摘要

An electrode less low-pressure mercury vapour discharge lamp comprising a discharge vessel which has a radiation transmitting envelope and a cavity, which cavity accommodates a core of magnetic material and a wire winding surrounding said core and connected to a high-frequency supply unit. The envelope is provided with a first luminescent layer and the cavity with a second luminescent layer. Of the two or more luminescent materials present the luminescent material with the greatest depreciation is present exclusively in the first luminescent layer.