Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For plural electrodes of discharge device
Patent
1979-11-13
1982-02-09
Karlsen, Ernest F.
Electric lamp and discharge devices
With support and/or spacing structure for electrode and/or...
For plural electrodes of discharge device
313178, H01J 6180, H01J 1970
Patent
active
043151876
ABSTRACT:
A stroboscopic discharge tube for use in photography is provided which comprises a light-transmitting tube having its opposite ends closed, a cathode and an anode disposed within said tube, and plasma producing gas, said cathode comprising a first electric conducting stem extending through one end of the tube into the interior of the tube and a cathodic annular ring made of emissive material affixed to the stem at least by means of welding, said anode comprising a second electric conducting stem extending through the other end of the tube into the tube interior and an anodic annular ring made of impurity gas absorbing material secured to the second stem, the diameters of the cathodic and anodic rings being such that the outer peripheries of the rings are closely adjacent to the inner wall of the tube so as to define a confined discharging region between the two rings. The discharge tube of the invention provides stable light.
REFERENCES:
patent: 2162505 (1939-06-01), James et al.
patent: 2468221 (1949-04-01), Miller
patent: 3543182 (1970-11-01), Witteman et al.
Karlsen Ernest F.
Nam Kwong Electric Co. Ltd.
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