Electric lamp and discharge devices – With magnetic device – Field transverse to discharge
Patent
1980-09-22
1982-12-28
Segal, Robert
Electric lamp and discharge devices
With magnetic device
Field transverse to discharge
313192, H01J 6106, H01J 6100
Patent
active
043664083
ABSTRACT:
An electric arc discharge lamp comprises a cathode (2), an apertured diaphragm (4) and a cup shaped apertured anode (6). The anode (6) is provided with a flared extension (7) and is mounted on leads passing through ceramic tubes (14) (FIG. 4). The cathode (2) is enclosed in a cup shaped member comprising a cylindrical tube (5) having one end closed by the diaphragm (4). The electrodes are enclosed in a sealed envelope (8) (FIG. 4) which is filled with deuterium. A synthetic quartz window (81) is provided in one end of the envelope to enable ultra-violet radiation from the arc struck between the cathode and anode to pass through.
The cathode (2), the aperture (42) in the diaphragm (4) and the aperture (62) in the anode (6) are aligned and lie on the axis of symmetry of the envelope (8). The anode is an efficient heat radiator because of its large surface area and thus works at a lower than normal temperature allowing the use of stainless steel rather than the usual refractory metals.
REFERENCES:
patent: 1893887 (1933-01-01), Giard
patent: 3601489 (1971-08-01), Gelder
patent: 3855491 (1974-12-01), Yamasaki
Cooper Geoffrey A.
Ward Donald W.
Pye (Electronic Products) Ltd.
Segal Robert
Smith Robert S.
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