Vertical running, high brightness, low wattage metal halide arc

Details Vertical running, high brightness, low wattage metal halide arc Vertical running, high brightness, low wattage metal halide arc

1983-11-30

1988-03-01

DeMeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313631, 313639, H01J 6120, H01J 6106

Patent

active

047288574

ABSTRACT:
A miniature, low-wattage, discharge lamp operable on direct current employs substantially parallel electrodes sealed in a single press seal. The electrodes are configured to provide an arc which is substantially parallel to the longitudinal axis of the lamp with the cathode being substantially longer than the anode. Heat generated at the anode is dissipated through the seal to the cathode allowing the cathode to operate hot enough to be stable. The chemical fill for the lamp employs a mol ratio of thorium to cesium to permit good light output and good color rendition.

REFERENCES:
patent: 3514659 (1970-05-01), Gungle et al.
patent: 4302699 (1981-11-01), Keeffe et al.
patent: 4308483 (1981-12-01), Keeffe et al.
patent: 4360756 (1982-11-01), Spencer et al.

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