Gaseous-discharge lamp having reflector in interior thereof

Details Gaseous-discharge lamp having reflector in interior thereof Gaseous-discharge lamp having reflector in interior thereof

1990-11-20

1992-07-07

DeMeo, Palmer C.

Electric lamp and discharge devices: systems

Discharge device load

Plural cathode and/or anode discharge device load

315337, 315339, 315261, 313113, 313567, 313581, H01J 1736, H01J 516, H01J 6100

Patent

active

051285967

ABSTRACT:
A gaseous-discharge lamp has a valve defining an interior of the lamp in which an inert gas, such as xenon, is confined. A cup-shaped reflector is disposed in the interior of the lamp, whose inner surface cross-section is preferably a hyperbola or an ellipse so that a collimated light spot is projected outwardly of the lamp or a focused light beam is available. The reflector has a larger-diameter opening facing a light projection window formed on one face of the valve and a bottom portion formed with a hole. An anode and a cathode are disposed in confrontation with each other in a space surrounded by the reflector. A trigger probe electrode intervenes between the anode and the cathode. A sparker electrode is disposed outside of the reflector and in the vicinity of the hole formed in the bottom portion thereof. By the provision of the reflector in the interior of the lamp, light of high radiation intensity is produced from the lamp without increasing the size of the lamp.

REFERENCES:
patent: 4179037 (1979-12-01), Chan et al.
patent: 4658179 (1987-04-01), Roberts

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