Patent ID: 7594838
Filing Date: 2009-09-29
Classification: H01J

Abstract:
1. A method of introducing mercury into the internal space of an electron lamp with the use of glass capsules containing liquid mercury and disposed each within a metal container, one end of said container being provided with at least one opening whose diameter is much less than the diameter of the glass capsule, characterized in that prior to vacuum treatment at least one of said glass capsules is mounted in an exhaust tube in close proximity to an exposed electrode in such manner that the opening provided in the metal container is facing the working area of lamp tube, and upon carrying out vacuum treatment and filling the internal space with an inert gas, the portion of the exhaust tube that contains the capsule is separated from an evacuation unit, and this area is subjected to the local effect of a high-power electromagnetic radiation, thereby causing substantially instantaneous heating of the metal container, which results in a rupture of the glass capsule and intense evaporation of the liquid mercury, thereby resulting in a directional flow of pure mercury vapor, which flow rapidly fills up said internal space of the electron lamp, and the process of introduction is completed by separating the remaining portion of said exhaust tube with said metal container from said electron lamp.