Electric lamp or space discharge component or device manufacturi – Process – With assembly or disassembly
Patent
1989-12-15
1992-04-28
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
With assembly or disassembly
445 22, 445 39, 445 40, 445 43, 65 5926, 65109, 65110, H01J 932, H01J 924
Patent
active
051083337
ABSTRACT:
To make a small high-pressure discharge lamp, for example of 50 W rating or less, and suitable, for example, for automotive applications, a quartz glass tube is heated, formed with constrictions, and a gas passed therebetween to expand the portion of the tube between the constrictions into olive shape to form the discharge vessel (6). A preformed first electrode system is introduced through one of the constrictions. The electrode system preferably has a zig-zag lead (9) slightly larger than the internal diameter of the tube to provide for self-centering. The tube is then isolated from atmosphere, for example by being placed in a glove box or coupled to a pumping head (15), for introduction therein of a fill substance, for example in pellet form, of a metal halide and, if desired, mercury; and a fill gas, such as argon or, preferably, xenon, preferably after cleaning and flushing the tube. A second electrode system is then introduced, for example within the glove box, and the end of the tube sealed off, with the fill substance therein. A second pinch seal (18) can then be formed externally of the glove box, or while the tube is still connected to a pumping head, and excess end pieces of the tube and the electrodes are cut off.
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Bastian Hartmuth L.
Heider Jurgen
Kotschenreuther Richard
Kotter Stefan
Lang Dieter
Patent Treuhand fur elektrische Gluhlampen m.b.H.
Ramsey Kenneth J.
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