Manufacturing method of discharge lamp electrode

Details Manufacturing method of discharge lamp electrode Manufacturing method of discharge lamp electrode

1991-06-11

1993-02-16

Seidel, Richard K.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

21912166, 21912176, H01J 912

Patent

active

051866714

ABSTRACT:
A discharge lamp electrode having a spherical end portion which serves as a discharge part and has a diameter larger than the remaining base part is formed by simultaneously applying a plurality of laser beams to one end portion of a rod-shaped material of tungsten or tungsten alloy in different directions. Preferably, the rod-shaped material is held vertically while the laser beams are applied to its lower end portion.

REFERENCES:
patent: 3378446 (1968-04-01), Whittlesey
patent: 3711908 (1973-01-01), Broers
patent: 4560357 (1985-12-01), Bouchard et al.
patent: 4678268 (1987-07-01), Russo et al.

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