Vertical running, high brightness, low wattage metal halide lamp

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

1983-08-29

1984-06-12

Demeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having specified electrode spacing

313621, 313632, H01J 6106

Patent

active

044544502

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: 4144472 (1979-03-01), Van Loon et al.
patent: 4308483 (1981-12-01), Keeffe et al.
patent: 4320322 (1982-03-01), Rothwell, Jr. et al.

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