High-pressure discharge lamp, particularly double-ended high-pow

Details High-pressure discharge lamp, particularly double-ended high-pow High-pressure discharge lamp, particularly double-ended high-pow

1990-03-28

1992-08-11

DeMeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

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

313332, 313634, 313640, 445 26, H01J 6136, H01J 6130

Patent

active

051382270

ABSTRACT:
To reduce the axial length of high-power, high-pressure discharge lamps, for example between 1000-4000 W rating, while reducing the temperature, in operation, of a connection foil (8) adjacent the base ends of the foil, the discharge vessel (2) of quartz glass has two shaft-like extensions (5) unitary therewith, in which the connection foils are pinch or press-sealed. The lengths of the pinch or press seals are major fractions of the length of the discharge of the discharge vessel, for example between 2/3 and 4/3 thereof, and the connection foil extends over a major portion of the length of the shaft-like extension, for example between 60-80%. Such pinch seals are made by differentially, over its length, heating the shaft-like extension (5).

REFERENCES:
patent: 2924731 (1960-02-01), Martt
patent: 3654506 (1972-04-01), Kuhl
patent: 3842307 (1974-10-01), Dobrusskin et al.
patent: 4254356 (1981-03-01), Karikas
patent: 4389201 (1983-06-01), Hansler et al.
patent: 4396857 (1983-08-01), Danko
patent: 4647814 (1987-03-01), Dobrusskin et al.
patent: 4686419 (1987-08-01), Block et al.
patent: 4749902 (1988-06-01), Weiss
patent: 4983889 (1991-01-01), Roberts
"Designers Handbook Light Source Applications" by Waymouth et al, p. 41, vania/GTE, 1980.
"Technisch-wissenschaftliche Abhandlungen der OSRAM Gesellschaft"(Technical-Scientific Publications of the OSRAM company). vol. 11, pp. 163 et seq., article by Lewandowski New OSRAM-HMI.RTM. Lamps for Folor Film and Color Television Filming; vol. 12, pp. 83 et seq., article by Dobrusskin and Leyendecker Halogen Metal Vapor Lamps with Rare Earths.

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