Low-pressure discharge lamp having hollow electrodes

Details Low-pressure discharge lamp having hollow electrodes Low-pressure discharge lamp having hollow electrodes

1995-09-19

1997-10-07

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313356, H01J 6109

Patent

active

056752148

ABSTRACT:
The low-pressure discharge lamp is discolsed having a lamp vessel into which hollow cylindrical electrodes enter, between which a discharge path extends. At least one of the electrodes has a tube at a distance from an end thereof, the tube extending in the discharge path. The tube is connected to the electrode by electrically conductive means and is coated with electron emissive material. The surface area of the material of the means in cross-section is at most 25% of the surface area of the material of the electrode in cross-section.

REFERENCES:
patent: 2847605 (1958-08-01), Byer
patent: 3505553 (1970-04-01), Piree
patent: 3883764 (1975-05-01), Johnson et al.
patent: 4117374 (1978-09-01), Witting
patent: 5387837 (1995-02-01), Roelevink et al.
patent: 5432690 (1995-07-01), Van Der Vliet et al.
patent: 5557170 (1996-09-01), Ooms

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