Method of dispensing mercury into an arc discharge lamp

Details Method of dispensing mercury into an arc discharge lamp Method of dispensing mercury into an arc discharge lamp

1988-07-13

1989-09-26

Wieder, Kenneth

Electric lamp and discharge devices

With frangible capsule containing getter, gas or vapor...

313565, 445 9, H01J 6128

Patent

active

048703230

ABSTRACT:
A method of releasing mercury into an arc discharge lamp is disclosed. The method includes the step of disposing an insulating coating (e.g., zirconium dioxide) at the end of the lamp containing a mercury releasing target. The insulating coating is disposed over the lead-in wires, portions of one of the coil electrodes, and a portion of the mercury dispensing target. The main body portion of the target containing the mercury is devoid of the insulating coating. Thereafter, the mercury dispensing target is bombarded with a directed stream of electrons produced by the other coil electrode of sufficient energy to rupture the target causing the mercury to be released. The insulating coating focuses the directed stream of electrons directly on the target, thereby reducing the amount of time necessary to rupture the target.

REFERENCES:
patent: 2769112 (1956-10-01), Heine et al.
patent: 2991387 (1961-07-01), McCauley
patent: 3069580 (1962-12-01), Waymouth, Jr.
patent: 3706895 (1972-12-01), Martyny et al.
patent: 4204137 (1980-05-01), Roy
patent: 4454447 (1984-06-01), Roche et al.
patent: 4494042 (1985-01-01), Roche
patent: 4553067 (1985-11-01), Roche et al.
patent: 4754193 (1988-06-01), Holmes et al.

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