Method of manufacturing a low-pressure mercury vapor discharge l

Details Method of manufacturing a low-pressure mercury vapor discharge l Method of manufacturing a low-pressure mercury vapor discharge l

1984-05-07

1986-02-18

Lusignan, Michael R.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

427 451, 427 64, 427 66, 445 58, H01J 162, H01J 6304, B05D 302, B05D 506

Patent

active

045715220

ABSTRACT:
A method of manufacturing a low-pressure mercury vapor discharge lamp comprising a discharge tube (1), to the inner wall of which is applied a layer of luminescent material (4) by means of a suspension of the luminescent material, which suspension is brought into contact with this inner wall in such a manner that a layer of suspension adheres thereto, the non-adhered suspension disappearing from the tube, after which the layer is dried by heating a zone (14) of this layer extending along the tube circumference by means of a high-frequency electric field which from a starting point near the upper end of the tube performs such a movement with respect to the tube that the zone moves towards the lower end of the tube.

REFERENCES:
patent: 3484276 (1969-12-01), Burggraaf et al.

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