Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For plural electrodes of discharge device
Patent
1978-10-30
1982-09-14
Segal, Robert
Electric lamp and discharge devices
With support and/or spacing structure for electrode and/or...
For plural electrodes of discharge device
313112, H01J 61067, H01J 6130
Patent
active
043497659
ABSTRACT:
A device for generating high intensity ultraviolet radiation thermoemissively in a discharge tube filled with a mercury vapor and at least one rare gas, the discharge tube having two ends joined to two tubular envelopes housing anode and cathode electrodes, wherein the rare gas is either argon, krypton or xenon maintained at an operating pressure of between 0.01 and 0.5 Torr, and the discharge tube and the tubular envelopes consist of doped quartz glass doped such that radiation lines at 185 and 194 mm are almost completely absorbed and a radiation line at 254 nm is transmitted almost without loss, and wherein is provided on the discharge tube an appendix-like piece of tube, which is to receive condensed mercury and the temperature of which is adjustable between 48.degree. and 65.degree. C.
REFERENCES:
patent: 2272992 (1942-02-01), Hebo
patent: 3971968 (1976-07-01), Bachman et al.
patent: 3988628 (1976-10-01), Clausen
patent: 4000431 (1976-12-01), Brandli et al.
patent: 4056751 (1977-11-01), Gungle et al.
patent: 4129800 (1978-12-01), Benthem et al.
BBC Brown Boveri & Company Limited
Segal Robert
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