Short-arc, ultra-high pressure discharge lamp

Details Short-arc, ultra-high pressure discharge lamp Short-arc, ultra-high pressure discharge lamp

2005-06-28

2005-06-28

Patel, Vip (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having electrode lead-in or electrode support sealed to...

C313S625000, C313S318070, C313S635000

Reexamination Certificate

active

06911775

ABSTRACT:
To reduce and prevent electrode displacement and at the same time to devise an arrangement of the side tube parts with high adhesion, a short-arc, ultra-high pressure discharge lamp a light emmitting part in which there is a pair of opposed electrodes and which is filled with at least 0.15 mg/mm3of mercury is provided with side tube parts which extend from opposite sides of the light emitting part in which the electrodes are partially hermeticallly sealed and in which the electrodes are each welded in a central valley of a metal foil that has a cross section with an essentially inverted W-shape. The valley and flanking arches or peaks of the W-shape may be sarpentine or sinusoidal, trapezoidal, or rectangular in addition to the traditional W-shape having acutely angled corners between straight legs.

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European Search Report Dated Aug. 29, 2003.

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